Springmvc

By Spring

1. What is springMVC?

Spring Web MVC is a Java-based, request-driven, lightweight Web framework that implements the MVC design pattern.

2. Add related dependencies

< div class="code"> 

 

 org.springframework

 spring-webmvc

 ${spring.version}

JSTL dependency



 jstl

 jstl

 1.2

 

 

 taglibs

 standard

 1.1.2

tomcat-jsp-api

 8.0.4

 org.apache.tomcat

 tomcat-jsp-api

 ${tomcat-jsp-api.version}

 6

Complete pom

p> 

"1.0" encoding=" UTF-8"?>



"http://maven.apache.org/POM/4.0 .0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

 xsi:schemaLocation="http://maven.apache.org /POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

 4.0.0



 com.cjh

 ssm

 1.0-SNAPSHOT

 war



 ssm Maven Webapp

 

 http://www.example.com span>



 

 UTF-8

 1.8

 1.8

 3.7.0 maven.compiler.plugin.version>



 

 

 5.0.2.RELEASE

 

 3.4.5

 

 5.1.44

 

 5.1.2

 

 1.3.1

 

 2.1.1

 2.4.3

 

 2.9.1

 

 4.12

 4.0.0

 1.18.2

 

 2.9.1

 3.2.0

 1.7.13

 

 2.9.0

 1.7.1.RELEASE.RELEASE redis.spring.version>

 

 2.9.3



 8.0.46 tomcat-jsp-api.version>



 





 

 

 

 org.springframework

 spring-webmvc

 ${spring.version}

 



 

 org.springframework

 spring-orm

 ${spring.version}

 

 

 org.springframework

 spring-tx

 ${spring.version}

 

 

 org.springframework

 spring-aspects

 ${spring.version}

 

 

 org.springframework

 spring-web

 ${spring.version}

 

 

 org.springframework

 spring-test

 ${spring.version}

 

 

 

 org.mybatis

 mybatis

 ${mybatis.version}

 

 

 

 org.mybatis

 mybatis

 ${mybatis.version}

 

 

 

 mysql

 mysql-connector-java

 ${mysql.version}

 

 

 

 com.github.pagehelper

 pagehelper

 ${pagehelper.version}

 

 

 

 org.mybatis

 mybatis-spring

 ${mybatis.spring.version}

 

 

 

 org.apache.commons

 commons-dbcp2

 ${commons.dbcp2.version}

 

 

 org.apache.commons

 commons-pool2

 ${commons.pool2.version}

 

 

 

 

 org.apache.logging.log4j

 log4j-core

 ${log4j2.version}

 

 

 org.apache.logging.log4j

 log4j-api

 ${log4j2.version}

 

 

 

 org.apache.logging.log4j

 log4j-web

 ${log4j2.version}

 

 

 

 junit

 junit

 ${junit.version}

 test

 

 

 javax.servlet

 javax.servlet-api

 ${servlet.version}

 provided

 

 

 org.projectlombok

 lombok

 ${lombok.version}

 provided

 



 

 org.springframework

 spring-context-support

 ${spring.version}

 



 

 

 org.mybatis.caches

 mybatis-ehcache

 1.1.0

 



 

 

 net.sf.ehcache

 ehcache

 2.10.0

 

 

 

 

 

 org.slf4j

 slf4j-api

 ${slf4j.version}

 

 

 org.slf4j

 jcl-over-slf4j

 ${slf4j.version}

 runtime

 



 

 

 org.apache.logging.log4j

 log4j-api

 ${log4j2.version}

 

 

 org.apache.logging.log4j

 log4j-core

 ${log4j2.version}

 

 

 

 org.apache.logging.log4j

 log4j-slf4j-impl

 ${log4j2.version}

 

 

 

 org.apache.logging.log4j

 log4j-web

 ${log4j2.version}

 runtime

 



 

 

 com.lmax

 disruptor

 ${log4j2.disruptor.version}

 



 

 redis.clients

 jedis

 ${redis.version}

 

 

 org.springframework.data

 spring-data-redis

 ${redis.spring.version}

 

 

 

 com.fasterxml.jackson.core

 jackson-databind

 ${jackson.version}

 

 

 com.fasterxml.jackson.core

 jackson-core

 ${jackson.version}

 

 

 com.fasterxml.jackson.core

 jackson-annotations

 ${jackson.version}

 

 

 jstl

 jstl

 1.2

 

 

 taglibs

 standard

 1.1.2

 

 

 org.apache.tomcat

 tomcat-jsp-api

 ${tomcat-jsp-api.version}

 



 



 

 ssm

 

 

 

 src/main/java

 

 **/*.xml

 

 

 

 

 src/main/resources

 

 *.properties

 *.xml

 

 

 



 

 

 

 org.apache.maven.plugins

 maven-compiler-plugin

 ${maven.compiler.plugin.version}

 

 ${maven.compiler.source}

 ${maven.compiler.target}

 ${project.build.sourceEncoding}

 

 

 

 org.mybatis.generator

 mybatis-generator-maven-plugin

 1.3.2

 

 

 

 mysql

 mysql-connector-java

 ${mysql.version}

 

 

 

 true

 

 



 

 maven-clean-plugin

 3.1.0

 

 

 

 maven-resources-plugin

 3.0.2

 

 

 maven-compiler-plugin

 3.8.0

 

 

 maven-surefire-plugin

 2.22.1

 

 

 maven-war-plugin

 3.2.2

 

 

 maven-install-plugin

 2.5.2

 

 

 maven-deploy-plugin

 2.8.2

Modify web.xml

"http://xmlns.jcp.org/xml/ns/javaee"

 xmlns:xsi="http://www.w3.org /2001/XMLSchema-instance"

 xsi:schemaLocation="http://xmlns.jcp.org /xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"

 version="3.1">

 Archetype Created Web Application

 

 contextConfigLocation

 classpath:applicationContext.xml

 

 

 

 class>org.springframework.web.context.ContextLoaderListener class>

 



 

 

 SpringMVC

 class>org.springframework.web.servlet.DispatcherServlet class>

 

 

 contextConfigLocation

 /WEB-INF/spring-mvc.xml

 

 1

 

 <async-supported>trueasync-supported>

 

 

 SpringMVC

 /

Add springmvc-servlet.xml(spring-mvc.xml) under WEB-INF

"1.0" encoding="UTF-8< /span>"?>

"http://www.springframework.org/schema/beans "

 xmlns:xsi="http://www.w3.org /2001/XMLSchema-instance"

 xmlns:context="http://www.springframework.org /schema/context"

 xmlns:mvc="http://www.springframework.org /schema/mvc" xmlns:aop="http://www.springframework.org/schema/aop"

 xsi:schemaLocation="http://www.springframework.org /schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd

 http://www.springframework.org/schema/context < span style="color: #008000; text-decoration: underline;">http://www.springframework.org/schema/context/spring-context-4.3.xsd http://www.springframework.org/schema/mvc http://www .springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/aop< /span> http://www.springframework.org/schema/aop/spring-aop.xsd">

 

 

 

 base-package="com.javaxl.ssm"/>



 

 

 <[email protected] support, @DateTimeFormat support, @Valid support, support for reading and writing XML (JAXB), support for reading and writing JSON (Jackson) -->

 



 

 class="org.springframework.web.servlet.view.InternalResourceViewResolver">

 

 "viewClass"

 value="org.springframework.web.servlet.view.JstlView ">

 "prefix" value="/"/>

 "suffix" value=".jsp"/>

 



 

 

 "/images/" mapping="/images/**< /span>"/>

Springmvc implementation of helloword

. The first springMVC program: HelloWorld

package com.cjh.controller;



import org.springframework.stereotype.Controller;

import org.springframework.web.bind.annotation.RequestMapping;



import javax.servlet.http.HttpServletRequest;



/**

 * There are five situations for the result set processing

 * 1. Forward to the page (under webapp)

 * 2. Forward to action request

 * 3. Redirect to the page

 * 4. Redirect to action

 * 5. Forward to the page under web_info

 *

 * @author

 * @site

 * @company

 * @create 2019-09-28 10:58

 */

@Controller

public class HelloController {



 @RequestMapping("hello")

 public String hello(HttpServletRequest request){

 request.setAttribute("msg","forward to page ");

 return "hello";

}



 /**

 * Redirect to action

 * @param request

 * @return

 */

 @RequestMapping("hello2")

 public String redirectPage(HttpServletRequest request){

 request.setAttribute("msg","Redirect to action");

 return "redirect: hello";

}



 /**

 * Redirect to the page

 * @param request

 * @return

 */

 @RequestMapping("hello3")

 public String redirectPage2(HttpServletRequest request){

// request.setAttribute("msg","Redirect to Page");

 Object msg = request.getAttribute("msg");



 return "redirect:/hello.jsp";

}



    /**

     * 转发到action请求

     * @param request

     * @return

     */

    @RequestMapping("hello4")

    public String forwardAction(HttpServletRequest request){

        request.setAttribute("msg","重定向到action");

        return "forward:hello3";

}



    /**

     *

     * @param request

     * @return

     */

    @RequestMapping("hello5")

    public String forwardActionw(HttpServletRequest request){

        request.setAttribute("msg","转发到webinf页面");

        return "abcd";

}



}

新建一个hello.jsp

<%--

  Created by IntelliJ IDEA.

  User: dell

  Date: 2019/9/28

  Time: 11:00

  To change this template use File | Settings | File Templates.

--%>

<%@ page contentType="text/html;charset=UTF-8" language="java" %>





    Title





hello springmvc



${msg}

Springmvc常用注解及返回值处理

booklsit

<%@ page language="java" contentType="text/html; charset=UTF-8"

    pageEncoding="UTF-8"%>

    <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>

   <%@ taglib uri="/zking" prefix="z" %>

"-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">





"Content-Type" content="text/html; charset=UTF-8">

Insert title here







    
"${pageContext.request.contextPath}/book/list"

        method="post">

        书名："text" name="bname"> "submit"

            value="确定">

    


    

    "1" width="100%">







"${bookList }" var="b">

            






        

            编号
            名称
            价格
            操作
        

        

                ${b.bid }
                ${b.bname }
                ${b.price }
                

                      &nbsp;

                    

                		
            

        
    


     "${pageBean }">

bookEdit

<%@ page language="java" contentType="text/html; charset=UTF-8"

    pageEncoding="UTF-8"%>

"-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">





"Content-Type" content="text/html; charset=UTF-8">

Insert title here







    
"bookForm" action="" method="post">

        bid:"text" name="bid" value="${b.bid }">


        bname:"text" name="bname" value="${b.bname }">


        price:"text" name="price" value="${b.price }">


        "submit" value="提交" onclick="doSubmit(‘${b.bid }‘);">

pagTag

package com.cjh.util;





import javax.servlet.jsp.JspException;

import javax.servlet.jsp.JspWriter;

import javax.servlet.jsp.tagext.BodyTagSupport;

import java.io.IOException;

import java.util.Map;

import java.util.Map.Entry;

import java.util.Set;





public class PageTag extends BodyTagSupport {



    private static final long serialVersionUID = 1L;

    private PageBean pageBean;

    public PageBean getPageBean() {

        return pageBean;

}

    public void setPageBean(PageBean pageBean) {

        this.pageBean = pageBean;

}

 @Override

    public int doStartTag() throws JspException {

        JspWriter out = pageContext.getOut();

 try {

            out.print(toHTML());

        } catch (IOException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

}

        return super.doStartTag();

}

    private String toHTML() {

        StringBuffer sb = new StringBuffer();

        /*

         * 拼接向后台提交数据的form表单

         *     注意：拼接的form表单中的page参数是变化的，所以不需要保留上一次请求的值

         */

        sb.append("
"+pageBean.getUrl()+"‘ method=‘post‘>");

        sb.append("");

        Map parameterMap = pageBean.getMap();

        if(parameterMap != null && parameterMap.size() > 0) {

            Set> entrySet = parameterMap.entrySet();

            for (Entry entry : entrySet) {

                if(!"page".equals(entry.getKey())) {

                    String[] values = entry.getValue();

                    for (String val : values) {

                        sb.append(""+entry.getKey()+"‘ value=‘"+val+"‘>");

}

}

}

}

        sb.append("");



        /*

         * 展示的分页条

         */

        sb.append("
");

        sb.append("每页"+pageBean.getRows()+"条，共"+pageBean.getTotal()+"条，第"+pageBean.getPage()+"页，共"+pageBean.getMaxPage()+"页  首页  ");

        sb.append(" href=‘javascript:gotoPage("+pageBean.getPreivousPage()+")‘>上一页  ");

        sb.append(" href=‘javascript:gotoPage("+pageBean.getNextPage()+")‘>下一页  ");

        sb.append(" href=‘javascript:gotoPage("+pageBean.getMaxPage()+")‘>尾页  ");

        sb.append(" id=‘skipPage‘");

        sb.append(" style=‘text-align: center; font-size: 12px; width: 50px;‘>  ");

        sb.append(" href=‘javascript:skipPage()‘>Go");

        sb.append("
"); 
 
 /* 
 * 给分页条添加与后台交互的js代码 
 */ 
 sb.append(""); 
 return sb.toString(); 
} 
}

 

bookcontroller

package com.cjh.controller;



import com.cjh.model.Book;

import com.cjh.service.BookService;

import com.cjh.util.PageBean;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Controller;

import org.springframework.web.bind.annotation.PathVariable;

import org.springframework.web.bind.annotation.RequestMapping;



import javax.servlet.http.HttpServletRequest;

import java.util.List;

import java.util.Map;



/**

 * @author

 * @site

 * @company

 * @create 2019-09-28 13:38

 */

@Controller

@RequestMapping("/book")

public class BookController {

 @Autowired

    private BookService bookService;



    @RequestMapping("/list")

    public String list(Book book, HttpServletRequest request){

        PageBean pageBean = new PageBean();

        pageBean.setRequest(request);

        List maps = this.bookService.listPager(book, pageBean);

        request.setAttribute("bookList",maps);

        request.setAttribute("pageBean",pageBean);

        return "bookList";



}

    @RequestMapping("/preSave")

    public String preSave(Book book, HttpServletRequest request){

        if (book.getBid() != null){

            Book b = this.bookService.selectByPrimaryKey(book.getBid());

             request.setAttribute("b",b);



}

        return "bookEdit";



}

    @RequestMapping("/add")

    public String add(Book book, HttpServletRequest request){

        this.bookService.insert(book);

        return "redirect:/book/list";



}

    @RequestMapping("/del/{bid}")

    public String del(@PathVariable(value = "bid") Integer bid, HttpServletRequest request){

        this.bookService.deleteByPrimaryKey(bid);

        return "redirect:/book/list";



}

    @RequestMapping("/edit")

    public String edit(Book book, HttpServletRequest request){

        this.bookService.updateByPrimaryKeySelective(book);

        return "redirect:/book/list";



}

}

分享图片

Springmvc静态资源处理

访问下面的图片：

分享图片

修改springmvc-servlet.xml




    "/static/" mapping="/static/**"/>

分享图片

 

        org.springframework

        spring-webmvc

        ${spring.version}

      



          jstl

          jstl

          1.2

      

      

          taglibs

          standard

          1.1.2

      

  8.0.4

      org.apache.tomcat

      tomcat-jsp-api

      ${tomcat-jsp-api.version}

    6

"1.0" encoding="UTF-8"?>



"http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

  4.0.0



  com.cjh

  ssm

  1.0-SNAPSHOT

  war



  ssm Maven Webapp

  

  http://www.example.com



  

    UTF-8

    1.8

    1.8

    3.7.0



    

    

    5.0.2.RELEASE

    

    3.4.5

    

    5.1.44

    

    5.1.2

    

    1.3.1

    

    2.1.1

    2.4.3

    

    2.9.1

    

    4.12

    4.0.0

    1.18.2

    

    2.9.1

    3.2.0

    1.7.13

    

    2.9.0

    1.7.1.RELEASE

    

    2.9.3



    8.0.46



  





  

    

    

      org.springframework

      spring-webmvc

      ${spring.version}

    



    

      org.springframework

      spring-orm

      ${spring.version}

    

    

      org.springframework

      spring-tx

      ${spring.version}

    

    

      org.springframework

      spring-aspects

      ${spring.version}

    

    

      org.springframework

      spring-web

      ${spring.version}

    

    

      org.springframework

      spring-test

      ${spring.version}

    

    

    

      org.mybatis

      mybatis

      ${mybatis.version}

    

    

    

      org.mybatis

      mybatis

      ${mybatis.version}

    

    

    

      mysql

      mysql-connector-java

      ${mysql.version}

    

    

    

      com.github.pagehelper

      pagehelper

      ${pagehelper.version}

    

    

    

      org.mybatis

      mybatis-spring

      ${mybatis.spring.version}

    

    

    

      org.apache.commons

      commons-dbcp2

      ${commons.dbcp2.version}

    

    

      org.apache.commons

      commons-pool2

      ${commons.pool2.version}

    

    

    

    

      org.apache.logging.log4j

      log4j-core

      ${log4j2.version}

    

    

      org.apache.logging.log4j

      log4j-api

      ${log4j2.version}

    

    

    

      org.apache.logging.log4j

      log4j-web

      ${log4j2.version}

    

    

    

      junit

      junit

      ${junit.version}

      test

    

    

      javax.servlet

      javax.servlet-api

      ${servlet.version}

      provided

    

    

      org.projectlombok

      lombok

      ${lombok.version}

      provided

    



    

      org.springframework

      spring-context-support

      ${spring.version}

    



    

    

      org.mybatis.caches

      mybatis-ehcache

      1.1.0

    



    

    

      net.sf.ehcache

      ehcache

      2.10.0

    

    

    

    

    

      org.slf4j

      slf4j-api

      ${slf4j.version}

    

    

      org.slf4j

      jcl-over-slf4j

      ${slf4j.version}

      runtime

    



    

    

      org.apache.logging.log4j

      log4j-api

      ${log4j2.version}

    

    

      org.apache.logging.log4j

      log4j-core

      ${log4j2.version}

    

    

    

      org.apache.logging.log4j

      log4j-slf4j-impl

      ${log4j2.version}

    

    

    

      org.apache.logging.log4j

      log4j-web

      ${log4j2.version}

      runtime

    



    

    

      com.lmax

      disruptor

      ${log4j2.disruptor.version}

    



    

      redis.clients

      jedis

      ${redis.version}

    

    

      org.springframework.data

      spring-data-redis

      ${redis.spring.version}

    

    

    

      com.fasterxml.jackson.core

      jackson-databind

      ${jackson.version}

    

    

      com.fasterxml.jackson.core

      jackson-core

      ${jackson.version}

    

    

      com.fasterxml.jackson.core

      jackson-annotations

      ${jackson.version}

    

    

      jstl

      jstl

      1.2

    

    

      taglibs

      standard

      1.1.2

    

    

      org.apache.tomcat

      tomcat-jsp-api

      ${tomcat-jsp-api.version}

    



  



  

    ssm

    

      

      

        src/main/java

        

          **/*.xml

        

      

      

      

        src/main/resources

        

          *.properties

          *.xml

        

      

    



    

      

        

          org.apache.maven.plugins

          maven-compiler-plugin

          ${maven.compiler.plugin.version}

          

            ${maven.compiler.source}

            ${maven.compiler.target}

            ${project.build.sourceEncoding}

          

        

        

          org.mybatis.generator

          mybatis-generator-maven-plugin

          1.3.2

          

            

            

              mysql

              mysql-connector-java

              ${mysql.version}

            

          

          

            true

          

        



        

          maven-clean-plugin

          3.1.0

        

        

        

          maven-resources-plugin

          3.0.2

        

        

          maven-compiler-plugin

          3.8.0

        

        

          maven-surefire-plugin

          2.22.1

        

        

          maven-war-plugin

          3.2.2

        

        

          maven-install-plugin

          2.5.2

        

        

          maven-deploy-plugin

          2.8.2

        

      

    

  


"http://xmlns.jcp.org/xml/ns/javaee"

         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"

         version="3.1">

  Archetype Created Web Application

  

    contextConfigLocation

    classpath:applicationContext.xml

  

  

  

    class>org.springframework.web.context.ContextLoaderListenerclass>

  



  

  

    SpringMVC

    class>org.springframework.web.servlet.DispatcherServletclass>

    

    

      contextConfigLocation

      /WEB-INF/spring-mvc.xml

    

    1

    

    <async-supported>trueasync-supported>

  

  

    SpringMVC

    /

  


"1.0" encoding="UTF-8"?>

"http://www.springframework.org/schema/beans"

       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

       xmlns:context="http://www.springframework.org/schema/context"

       xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:aop="http://www.springframework.org/schema/aop"

       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd

      http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd">

    

    

    

    base-package="com.javaxl.ssm"/>



    

    

    <[email protected]支持，@DateTimeFormat支持，@Valid支持，读写XML的支持（JAXB），读写JSON的支持（Jackson）-->

    



    

    class="org.springframework.web.servlet.view.InternalResourceViewResolver">

        

        "viewClass"

                  value="org.springframework.web.servlet.view.JstlView">

        "prefix" value="/"/>

        "suffix" value=".jsp"/>

    



    

    

    "/images/" mapping="/images/**"/>

    






package com.cjh.controller;



import org.springframework.stereotype.Controller;

import org.springframework.web.bind.annotation.RequestMapping;



import javax.servlet.http.HttpServletRequest;



/**

 * 关于结果集处理分五种情况

 * 1.转发到页面(webapp下)

 * 2.转发到action请求

 * 3.重定向到页面

 * 4.重定向到action

 * 5.转发到web_info下的页面

 *

 * @author

 * @site

 * @company

 * @create 2019-09-28 10:58

 */

@Controller

public class HelloController {



    @RequestMapping("hello")

    public String hello(HttpServletRequest request){

        request.setAttribute("msg","转发到页面");

        return "hello";

}



    /**

     * 重定向到action

     * @param request

     * @return

     */

    @RequestMapping("hello2")

    public String redirectPage(HttpServletRequest request){

        request.setAttribute("msg","重定向到action");

        return "redirect: hello";

}



    /**

     * 重定向到页面

     * @param request

     * @return

     */

    @RequestMapping("hello3")

    public String redirectPage2(HttpServletRequest request){

//        request.setAttribute("msg","重定向到页面");

        Object msg = request.getAttribute("msg");



        return "redirect:/hello.jsp";

}



    /**

     * 转发到action请求

     * @param request

     * @return

     */

    @RequestMapping("hello4")

    public String forwardAction(HttpServletRequest request){

        request.setAttribute("msg","重定向到action");

        return "forward:hello3";

}



    /**

     *

     * @param request

     * @return

     */

    @RequestMapping("hello5")

    public String forwardActionw(HttpServletRequest request){

        request.setAttribute("msg","转发到webinf页面");

        return "abcd";

}



}

<%--

  Created by IntelliJ IDEA.

  User: dell

  Date: 2019/9/28

  Time: 11:00

  To change this template use File | Settings | File Templates.

--%>

<%@ page contentType="text/html;charset=UTF-8" language="java" %>





    Title





hello springmvc



${msg}




<%@ page language="java" contentType="text/html; charset=UTF-8"

    pageEncoding="UTF-8"%>

    <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>

   <%@ taglib uri="/zking" prefix="z" %>

"-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">





"Content-Type" content="text/html; charset=UTF-8">

Insert title here







    
"${pageContext.request.contextPath}/book/list"

        method="post">

        书名："text" name="bname"> "submit"

            value="确定">

    


    

    "1" width="100%">







"${bookList }" var="b">

            






        

            编号
            名称
            价格
            操作
        

        

                ${b.bid }
                ${b.bname }
                ${b.price }
                

                      &nbsp;

                    

                		
            

        
    


     "${pageBean }">




<%@ page language="java" contentType="text/html; charset=UTF-8"

    pageEncoding="UTF-8"%>

"-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">





"Content-Type" content="text/html; charset=UTF-8">

Insert title here







    
"bookForm" action="" method="post">

        bid:"text" name="bid" value="${b.bid }">


        bname:"text" name="bname" value="${b.bname }">


        price:"text" name="price" value="${b.price }">


        "submit" value="提交" onclick="doSubmit(‘${b.bid }‘);">


    





package com.cjh.util;





import javax.servlet.jsp.JspException;

import javax.servlet.jsp.JspWriter;

import javax.servlet.jsp.tagext.BodyTagSupport;

import java.io.IOException;

import java.util.Map;

import java.util.Map.Entry;

import java.util.Set;





public class PageTag extends BodyTagSupport {



    private static final long serialVersionUID = 1L;

    private PageBean pageBean;

    public PageBean getPageBean() {

        return pageBean;

}

    public void setPageBean(PageBean pageBean) {

        this.pageBean = pageBean;

}

 @Override

    public int doStartTag() throws JspException {

        JspWriter out = pageContext.getOut();

 try {

            out.print(toHTML());

        } catch (IOException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

}

        return super.doStartTag();

}

    private String toHTML() {

        StringBuffer sb = new StringBuffer();

        /*

         * 拼接向后台提交数据的form表单

         *     注意：拼接的form表单中的page参数是变化的，所以不需要保留上一次请求的值

         */

        sb.append("
"+pageBean.getUrl()+"‘ method=‘post‘>");

        sb.append("");

        Map parameterMap = pageBean.getMap();

        if(parameterMap != null && parameterMap.size() > 0) {

            Set> entrySet = parameterMap.entrySet();

            for (Entry entry : entrySet) {

                if(!"page".equals(entry.getKey())) {

                    String[] values = entry.getValue();

                    for (String val : values) {

                        sb.append(""+entry.getKey()+"‘ value=‘"+val+"‘>");

}

}

}

}

        sb.append("");



        /*

         * 展示的分页条

         */

        sb.append("
");

        sb.append("每页"+pageBean.getRows()+"条，共"+pageBean.getTotal()+"条，第"+pageBean.getPage()+"页，共"+pageBean.getMaxPage()+"页  首页  ");

        sb.append(" href=‘javascript:gotoPage("+pageBean.getPreivousPage()+")‘>上一页  ");

        sb.append(" href=‘javascript:gotoPage("+pageBean.getNextPage()+")‘>下一页  ");

        sb.append(" href=‘javascript:gotoPage("+pageBean.getMaxPage()+")‘>尾页  ");

        sb.append(" id=‘skipPage‘");

        sb.append(" style=‘text-align: center; font-size: 12px; width: 50px;‘>  ");

        sb.append(" href=‘javascript:skipPage()‘>Go");

        sb.append("
"); 
 
 /* 
 * 给分页条添加与后台交互的js代码 
 */ 
 sb.append(""); 
 return sb.toString(); 
} 
}

package com.cjh.controller;



import com.cjh.model.Book;

import com.cjh.service.BookService;

import com.cjh.util.PageBean;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Controller;

import org.springframework.web.bind.annotation.PathVariable;

import org.springframework.web.bind.annotation.RequestMapping;



import javax.servlet.http.HttpServletRequest;

import java.util.List;

import java.util.Map;



/**

 * @author

 * @site

 * @company

 * @create 2019-09-28 13:38

 */

@Controller

@RequestMapping("/book")

public class BookController {

 @Autowired

    private BookService bookService;



    @RequestMapping("/list")

    public String list(Book book, HttpServletRequest request){

        PageBean pageBean = new PageBean();

        pageBean.setRequest(request);

        List maps = this.bookService.listPager(book, pageBean);

        request.setAttribute("bookList",maps);

        request.setAttribute("pageBean",pageBean);

        return "bookList";



}

    @RequestMapping("/preSave")

    public String preSave(Book book, HttpServletRequest request){

        if (book.getBid() != null){

            Book b = this.bookService.selectByPrimaryKey(book.getBid());

             request.setAttribute("b",b);



}

        return "bookEdit";



}

    @RequestMapping("/add")

    public String add(Book book, HttpServletRequest request){

        this.bookService.insert(book);

        return "redirect:/book/list";



}

    @RequestMapping("/del/{bid}")

    public String del(@PathVariable(value = "bid") Integer bid, HttpServletRequest request){

        this.bookService.deleteByPrimaryKey(bid);

        return "redirect:/book/list";



}

    @RequestMapping("/edit")

    public String edit(Book book, HttpServletRequest request){

        this.bookService.updateByPrimaryKeySelective(book);

        return "redirect:/book/list";



}

}




    "/static/" mapping="/static/**"/>