Struts1+JQuery的例子

最新推荐文章于 2021-02-13 03:23:49 发布

flyingpig4

最新推荐文章于 2021-02-13 03:23:49 发布

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分类专栏： WEB开发文章标签： jquery struts function user string json

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本文介绍了一个使用Struts1、JQuery、JSON及XML进行数据交互的示例项目。包括如何配置Struts来处理JSON和XML响应，并展示了如何从前端通过JQuery发起请求并解析响应。

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Struts1+JQuery+JSON/XML的例子

1.Struts+JQuery+XML

struts-config.xml如下：

TestxmlAction.java如下:

/* * Generated by MyEclipse Struts * Template path: templates/java/JavaClass.vtl */ package action; import java.io.IOException; import java.io.PrintWriter; import java.util.ArrayList; import java.util.List; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.struts.action.Action; import org.apache.struts.action.ActionForm; import org.apache.struts.action.ActionForward; import org.apache.struts.action.ActionMapping; import form.TestForm; /** * MyEclipse Struts * Creation date: 03-05-2010 * * XDoclet definition: * @struts.action path="/test" name="testForm" input="index.jsp" scope="request" */ public class TestXmlAction extends Action { /* * Generated Methods */ /** * Method execute * @param mapping * @param form * @param request * @param response * @return ActionForward * @throws IOException */ public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws IOException { TestForm testForm = (TestForm) form;// TODO Auto-generated method stub response.setContentType("text/xml; charset=utf-8");//传输xml时要用html response.setCharacterEncoding("utf-8"); System.out.println(testForm.getTestvalue()); PrintWriter pw=response.getWriter(); //1.传递单个参数,注意应将text/xml改为text/html /*int i=9; pw.print(i); pw.flush();*/ //2.生成xml文件返回给html页面,此时list里面为单个String /* StringBuilder xml = new StringBuilder(); List<String> list=new ArrayList<String>(); list.add("aaa"); list.add("bbb"); list.add("ccc"); xml.append("<items>"); for (Object o : list) { xml.append("<item>").append(o).append("</item>"); } xml.append("</items>"); System.out.println(xml); pw.print(xml.toString()); pw.flush();*/ //3.生成xml文件返回给html页面,此时list里面为对象类型 /*response.setContentType("text/xml;charset=utf-8"); StringBuilder xml = new StringBuilder(); List<User> list=new ArrayList<User>(); User user1=new User(); User user2=new User(); User user3=new User(); user1.setUsername("username1"); user1.setPassword(1); user2.setUsername("username2"); user2.setPassword(2); user3.setUsername("username3"); user3.setPassword(3); list.add(user1); list.add(user2); list.add(user3); xml.append("<items>"); for (int i=0;i<list.size();i++) { xml.append("<itemslist>"); xml.append("<username>").append(list.get(i).getUsername()).append("</username>"); xml.append("<password>").append(list.get(i).getPassword()).append("</password>"); xml.append("</itemslist>"); } xml.append("</items>"); System.out.println(xml); pw.print(xml.toString());*/ return null; } }

辅助类User:

package action; public class User { private String username; private int password; public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public int getPassword() { return password; } public void setPassword(int password) { this.password = password; } }

indexxml.jsp如下：

2.Struts+JQuery+JSON

TestAction如下:

/* * Generated by MyEclipse Struts * Template path: templates/java/JavaClass.vtl */ package action; import java.io.IOException; import java.io.PrintWriter; import java.io.UnsupportedEncodingException; import java.util.ArrayList; import java.util.List; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import net.sf.json.JSONArray; import org.apache.struts.action.Action; import org.apache.struts.action.ActionForm; import org.apache.struts.action.ActionForward; import org.apache.struts.action.ActionMapping; import form.TestForm; /** * MyEclipse Struts * Creation date: 03-05-2010 * * XDoclet definition: * @struts.action path="/test" name="testForm" input="index.jsp" scope="request" */ public class TestAction extends Action { /* * Generated Methods */ /** * Method execute * @param mapping * @param form * @param request * @param response * @return ActionForward * @throws UnsupportedEncodingException */ public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws UnsupportedEncodingException { TestForm testForm = (TestForm) form;// TODO Auto-generated method stub response.setContentType("text/json; charset=utf-8"); //注意设置为json，如果为xml，则设为xml /* response.setContentType("text/xml; charset=utf-8");传输xml时要用xml * response.setCharacterEncoding("utf-8"); * */ System.out.println(testForm.getTestvalue()); //1.struts1.2+JQuery+Json传递list参数，此时list的类型为String /*List<String> list=new ArrayList<String>(); list.add("string1"); list.add("string2"); list.add("string3"); JSONArray json=JSONArray.fromObject(list); try { PrintWriter out=response.getWriter(); System.out.println(json); out.print(json); out.flush(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }*/ //2.struts1.2+JQuery+Json传递Map参数 /*Map<String,String> map=new HashMap<String,String>(); map.put("name1","string1"); map.put("name2","string2"); map.put("name3","string3"); JSONArray json=JSONArray.fromObject(map); try { PrintWriter out=response.getWriter(); System.out.println(json); out.print(json); out.flush(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }*/ //3.传递单个String值 /*String singlepara="{/"name/":'中国'}";//要注意格式 JSONObject json=JSONObject.fromObject(test); try { PrintWriter out=response.getWriter(); System.out.println(json); out.print(json); out.flush(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }*/ //4.struts1.2+JQuery+Json传递User参数 /*User user1=new User(); user1.setPassword(1); String username = "你好"; user1.setUsername(username); //user1.setUsername(new String(username.getBytes("utf-8"), "iso8859-1")); JSONObject json=JSONObject.fromObject(user1); try { PrintWriter out=response.getWriter(); System.out.println(json); out.print(json); out.flush(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }*/ //5.struts1.2+JQuery+Json传递list参数，此时list的类型为String List<User> list=new ArrayList<User>(); User user1=new User(); user1.setPassword(1); user1.setUsername("u1"); User user2=new User(); user2.setPassword(2); user2.setUsername("u2"); User user3=new User(); user3.setPassword(3); user3.setUsername("u3"); list.add(user1); list.add(user2); list.add(user3); JSONArray json=JSONArray.fromObject(list); try { PrintWriter out=response.getWriter(); System.out.println(json); out.print(json); out.flush(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } return null; } }

struts-config.xml如下：

index.jsp如下：

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <base href="<%=basePath%>"> <title>struts+jquery+json</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page">  <script type="text/javascript" src="/MyStrutsJQueryJson/js/jquery-1.4.2.js"></script> <script type="text/javascript"> /*1.struts1.2+JQuery+Json传递list参数，此时list的类型为String $(function(){ $("#submitbutton").click(function(){ var params={testvalue:$('#test').val()}; $.ajax({ url:"test.do", data:params, type:'post', dataType:'json', success:function(data){ //data值：["string1","string2","string3"] alert("成功"); alert(data.length); for(var j=0;j<data.length;j++) { alert(data[j]); } }, error: function(){ alert("失败"); } }) }) })*/ //2.struts1.2+JQuery+Json传递Map参数 /*$(function(){ $("#submitbutton").click(function(){ alert("start"); var params={testvalue:$('#test').val()}; $.ajax({ url:"test.do", data:params, type:'post', dataType:'json', success:function(data){ //alert(data.name1);//缺点是须知道属性名，在JSONArray下 //迭代循环输出 //data值为:[{"name3":"string3","name1":"string1","name2":"string2"}] $.each(data[0],function(key,value){ alert(key+" "+value); }) }, error: function(){ alert("失败"); } }) }) })*/ //3.struts1.2+JQuery+Json传递String参数 /* $(function(){ $("#submitbutton").click(function(){ var params={testvalue:$('#test').val()}; alert("start"); $.ajax({ url:"test.do", data:params, type:'post', dataType:'json', success:function(data){ alert("成功"); alert(data.name); }, error: function(){ alert("失败"); } }) }) })*/ //4.struts1.2+JQuery+Json传递User参数 /*$(function(){ $("#submitbutton").click(function(){ var params={testvalue:$('#test').val()}; $.ajax({ url:"test.do", data:params, type:'post', dataType:'json', success:function(data){ //data值为：{"password":1,"username":"你好"} alert("成功"); alert(data.username); alert(data.password); }, error: function(){ alert("失败"); } }) }) })*/ //5.struts1.2+JQuery+Json传递list参数，此时list的类型为User $(function(){ $("#submitbutton").click(function(){ var params={testvalue:$('#test').val()}; $.ajax({ url:"test.do", data:params, type:'post', dataType:'json', success:function(data){ alert("成功"); //data值：[{"password":1,"username":"u1"},{"password":2,"username":"u2"},{"password":3,"username":"u3"}] /*for(var j=0;j<data.length;j++) { alert(data[j].username); alert(data[j].password); }*/ $.each(data,function(i){ $.each(data[i],function(key,value){ alert(key+" "+value); }) }) }, error: function(){ alert("失败"); } }) }) }) </script> </head> <body> 测试输入框：<input type="text" id="test" name="hello"><br> <input type="button" name="submitbutton" id="submitbutton" value="提交"> </body> </html>