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作者:ssslinppp      时间:2015年5月26日 15:32:51

1. 摘要

本文讲解如何利用spring MVC框架,实现ajax异步请求以及json数据的返回。
使用到的技术主要如下:
  1. Ajax:使用JQuery 提供的ajax;==>需要引入jquery.min.js文件;
  2. Spring MVC;
  3. Json:提供两种方式返回json数据;

2. 项目结构




3. 前端

前台主界面:
文件位置:    浏览器界面:   

  1. <%@ page language="java" pageEncoding="UTF-8"%>
  2. <%
  3. String path = request.getContextPath();
  4. String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + path + "/";
  5. response.setHeader("Pragma", "no-cache");
  6. response.setHeader("Cache-Control", "no-cache");
  7. response.setDateHeader("Expires", 0);
  8. %>
  9. <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
  10. <html>
  11. <head>
  12. <title>SpringMVC+ajax+json</title>
  13. <script type="text/javascript">var basePath = "<%=basePath%>";</script>
  14. <%-- <link rel="stylesheet" type="text/css" href="<%=basePath%>js/easyui/demo.css"> --%>
  15. <script type="text/javascript" src="<%=basePath%>js/JQuery/jquery.min.js"></script>
  16. <script type="text/javascript" src="<%=basePath%>js/test/ajaxAndJson.js"></script>
  17. </head>
  18. <body>
  19. <div style="padding:5px 0;">
  20. <p>方式1</p>
  21. <a href="#" class="easyui-linkbutton" onclick="loadData1()" data-options="iconCls:'icon-add'">ajax异步获取json数据</a>
  22. </div>
  23. <div style="margin:10px 0 20px 0;"></div>
  24. <div style="padding:5px 0;">
  25. <p>方式2</p>
  26. <a href="#" class="easyui-linkbutton" onclick="loadData2()" data-options="iconCls:'icon-add'">ajax异步获取json数据</a>
  27. </div>
  28. </body>
  29. </html>

ajaxAndJson.js文件==>具体的ajax请求


  1. function loadData1() {
  2. var actionUrl = basePath + "test/testMVC1.action";
  3. var params = {
  4. "username" : 'zhangSan',
  5. 'passwd' : '12345678'
  6. };
  7. $.ajax({
  8. url : actionUrl,
  9. data : params,
  10. dataType : "json",
  11. cache : false,
  12. error : function(textStatus, errorThrown) {
  13. // $.messager.alert('错误', "系统请求错误: " + textStatus, 'error');
  14. alert("系统请求错误: " + textStatus);
  15. },
  16. success : function(data, textStatus) {
  17. // $.messager.alert('系统提示', data.username+data.passwd ,'info');
  18. alert(data.username+data.passwd );
  19. }
  20. });
  21. }
  22. function loadData2() {
  23. var actionUrl = basePath + "test/testMVC2.action";
  24. var params = {
  25. "username" : 'lisi',
  26. 'passwd' : '888888'
  27. };
  28. $.ajax({
  29. url : actionUrl,
  30. data : params,
  31. dataType : "json",
  32. cache : false,
  33. error : function(textStatus, errorThrown) {
  34. // $.messager.alert('错误', "系统请求错误: " + textStatus, 'error');
  35. alert("系统请求错误: " + textStatus);
  36. },
  37. success : function(data, textStatus) {
  38. // $.messager.alert('系统提示', data.Info+", "+data.userList[1].username ,'info');
  39. alert(data.Info+", "+data.userList[1].username);
  40. }
  41. });
  42. }



4. spring mvc配置文件

web.xml


  1. <web-app id="WebApp_ID" version="2.4"
  2. xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  3. xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
  4. http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
  5. <context-param>
  6. <param-name>contextConfigLocation</param-name>
  7. <param-value>classpath:applicationContext.xml</param-value>
  8. </context-param>
  9. <listener>
  10. <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  11. </listener>
  12. <servlet>
  13. <servlet-name>mvc-dispatcher</servlet-name>
  14. <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
  15. <load-on-startup>1</load-on-startup>
  16. </servlet>
  17. <servlet-mapping>
  18. <servlet-name>mvc-dispatcher</servlet-name>
  19. <url-pattern>/rest/*</url-pattern>
  20. </servlet-mapping>
  21. </web-app>

spring-servlet.xml

  1. <?xml version="1.0" encoding="UTF-8" ?>
  2. <beans xmlns="http://www.springframework.org/schema/beans"
  3. xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
  4. xmlns:context="http://www.springframework.org/schema/context"
  5. xmlns:mvc="http://www.springframework.org/schema/mvc"
  6. xsi:schemaLocation="http://www.springframework.org/schema/beans
  7. http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
  8. http://www.springframework.org/schema/context
  9. http://www.springframework.org/schema/context/spring-context-3.0.xsd
  10. http://www.springframework.org/schema/mvc
  11. http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">
  12. <!-- 扫描web包,应用Spring的注解 -->
  13. <context:component-scan base-package="com.ll.web"/>
  14. <!-- 配置视图解析器,将ModelAndView及字符串解析为具体的页面,默认优先级最低 -->
  15. <bean
  16. class="org.springframework.web.servlet.view.InternalResourceViewResolver"
  17. p:viewClass="org.springframework.web.servlet.view.JstlView"
  18. p:prefix="/jsp/"
  19. p:suffix=".jsp" />
  20. <!-- bean视图解析器 -->
  21. <bean class="org.springframework.web.servlet.view.BeanNameViewResolver"
  22. p:order="10" />
  23. <!-- XMl及JSON视图解析器配置 -->
  24. <bean id="testMVC"
  25. class="org.springframework.web.servlet.view.json.MappingJacksonJsonView">
  26. <property name="renderedAttributes">
  27. <set>
  28. <value>userList</value>
  29. <value>Info</value>
  30. </set>
  31. </property>
  32. </bean>
  33. <mvc:annotation-driven/>
  34. </beans>

applicationContext.xml

  1. <?xml version="1.0" encoding="UTF-8" ?>
  2. <beans xmlns="http://www.springframework.org/schema/beans"
  3. xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
  4. xmlns:context="http://www.springframework.org/schema/context"
  5. xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
  6. xsi:schemaLocation="http://www.springframework.org/schema/beans
  7. http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
  8. http://www.springframework.org/schema/context
  9. http://www.springframework.org/schema/context/spring-context-3.0.xsd
  10. http://www.springframework.org/schema/tx
  11. http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
  12. http://www.springframework.org/schema/aop
  13. http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">
  14. <!-- 扫描类包,将标注Spring注解的类自动转化Bean,同时完成Bean的注入 -->
  15. <context:component-scan base-package="com.ll.service"/>
  16. <context:component-scan base-package="com.ll.dao"/>
  17. </beans>



5. 控制器

AjaxController.java

  1. package com.ll.web;
  2. import java.util.ArrayList;
  3. import java.util.List;
  4. import org.springframework.stereotype.Controller;
  5. import org.springframework.ui.ModelMap;
  6. import org.springframework.web.bind.annotation.RequestMapping;
  7. import org.springframework.web.bind.annotation.ResponseBody;
  8. import com.ll.model.Person;
  9. @Controller
  10. @RequestMapping(value = "/test")
  11. public class AjaxController {
  12. /**
  13. * 返回主页
  14. * @return
  15. */
  16. @RequestMapping(value = "/index.action")
  17. public String index() {
  18. return "index";
  19. }
  20. /**
  21. * 方式1:
  22. * 使用@ResponseBody方式返回json数据
  23. * @param username
  24. * @param passwd
  25. * @return
  26. */
  27. @ResponseBody
  28. @RequestMapping(value = "/testMVC1.action")
  29. public Person testAjax(String username,String passwd) {
  30. System.out.println("ajax-使用@ResponseBody方式返回json数据==>" + username + "(" + passwd + ")");
  31. return new Person(username,passwd);
  32. }
  33. /**
  34. * 方式2:
  35. * 使用MappingJacksonJsonView和bean视图解析器返回json数据
  36. * @param mm
  37. * @param username
  38. * @param passwd
  39. * @return
  40. */
  41. @RequestMapping(value = "/testMVC2.action")
  42. public String getFusionChartsData(ModelMap mm,String username,String passwd) {
  43. System.out.println("ajax-使用MappingJacksonJsonView和bean视图解析器返回json数据==>" + username + "(" + passwd + ")");
  44. Person p1 = new Person(username+"_1",passwd+"_*1");
  45. Person p2 = new Person(username+"_2",passwd+"_*2");
  46. List<Person> userList = new ArrayList<Person>();
  47. userList.add(p1);
  48. userList.add(p2);
  49. mm.addAttribute("userList", userList);
  50. mm.addAttribute("Info","测试spring MVC");
  51. return "testMVC";
  52. }
  53. }














posted on 2015-05-26 16:15  ssslinppp  阅读(1194)  评论(0编辑  收藏  举报