在工作主页中的“我要投诉”，点击后弹出，投诉的新增页面，保存后到投诉受理后台管理进行处理。在这边添加时候需要使用到Ajax根据部门名称级联查询部门人员；查询到部门对应的人员列表后，需要将这些人员信息转换为json字符串。
1、HomeAction
（1）按照讲义中写的应该是引入3个jar，分别是： commons-beanutils-1.8.0.jar ezmorph-1.0.6.jar json-lib-2.3-jdk15.jar 我猜测，是为了进行JSON转换，但我写代码并没有成功 public void getUserJson(){
try {
//1、获取部门
String dept = ServletActionContext.getRequest().getParameter("dept");
if(StringUtils.isNotBlank(dept)){
QueryHelper queryHelper = new QueryHelper(User.class, "u");
queryHelper.addCondition("u.dept like ?", "%" + dept);
//2、根据部门查询用户列表
List<User> userList = userService.findObjects(queryHelper);
//创建Json对象
JSONObject jso = new JSONObject();
jso.put("msg", "success");
jso.accumulate("userList", userList);
//3、输出用户列表以json格式字符串形式输出
HttpServletResponse response = ServletActionContext.getResponse();
response.setContentType("text/html");
ServletOutputStream outputStream = response.getOutputStream();
outputStream.write(jso.toString().getBytes("utf-8"));
outputStream.close();
}
} catch (Exception e) {
e.printStackTrace();
}
}之后，我只能用gson来完成，当我想删除添加之前添加的jar包时，却无法删除，因此也没有办法判断这几个jar包对JSON字符串的功能 |
| （2）使用struts2-json-plugin-2.x.jar 包，由struts将action中的变量组装成Json对象。 |
HomeAction.java
package com.rk.home.action;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.sql.Timestamp;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.annotation.Resource;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import net.sf.json.JSONObject;
import org.apache.commons.lang3.StringUtils;
import org.apache.struts2.ServletActionContext;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.opensymphony.xwork2.Action;
import com.opensymphony.xwork2.ActionSupport;
import com.rk.core.entity.JsonResult;
import com.rk.core.utils.QueryHelper;
import com.rk.tax.entity.Complain;
import com.rk.tax.entity.User;
import com.rk.tax.service.ComplainService;
import com.rk.tax.service.UserService;
public class HomeAction extends ActionSupport {
private Map<String, Object> return_map;
private Complain comp;
@Resource
private UserService userService;
@Resource
private ComplainService complainService;
//跳转到首页
@Override
public String execute() throws Exception {
return "home";
}
//跳转到我要投诉
public String complainAddUI(){
return "complainAddUI";
}
public void getUserJson(){
try {
//1、获取部门
String dept = ServletActionContext.getRequest().getParameter("dept");
if(StringUtils.isNotBlank(dept)){
QueryHelper queryHelper = new QueryHelper(User.class, "u");
queryHelper.addCondition("u.dept like ?", "%"+dept); // FIXME 这里为什么是%+dept呢？
//2、根据部门查询用户列表
List<User> userList = userService.findList(queryHelper);
//创建Json对象
JsonResult result = new JsonResult();
result.setStatus(JsonResult.SUCCESS);
result.setData(userList);
Gson gson = new GsonBuilder().setDateFormat("yyyy-MM-dd").create();
String strJson = gson.toJson(result);
//3、输出用户列表，以JSON格式字符串形式输出
HttpServletResponse response = ServletActionContext.getResponse();
response.setContentType("text/html");
ServletOutputStream outputStream = response.getOutputStream();
outputStream.write(strJson.getBytes("utf-8"));
outputStream.close();
}
} catch (Exception e) {
e.printStackTrace();
}
}
public String getUserJson2(){
//1、获取部门
String dept = ServletActionContext.getRequest().getParameter("dept");
if(StringUtils.isNotBlank(dept)){
QueryHelper queryHelper = new QueryHelper(User.class, "u");
queryHelper.addCondition("u.dept like ?", "%"+dept);
//2、根据部门查询用户列表
return_map = new HashMap<String, Object>();
return_map.put("status", "success");
return_map.put("data", userService.findList(queryHelper));
}
return Action.SUCCESS;
}
//保存投诉
public void complainAdd(){
try {
if(comp != null){
//设置默写投诉状态为 待受理
comp.setState(Complain.COMPLAIN_STATE_UNDONE);
comp.setCompTime(new Timestamp(new Date().getTime()));
complainService.save(comp);
//输出投诉结果
HttpServletResponse response = ServletActionContext.getResponse();
response.setContentType("text/html");
ServletOutputStream outputStream = response.getOutputStream();
outputStream.write("success".getBytes("utf-8"));
outputStream.close();
}
} catch (Exception e) {
e.printStackTrace();
}
}
public Map<String, Object> getReturn_map() {
return return_map;
}
public void setReturn_map(Map<String, Object> return_map) {
this.return_map = return_map;
}
public Complain getComp() {
return comp;
}
public void setComp(Complain comp) {
this.comp = comp;
}
}JsonResult.java
package com.rk.core.entity;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
public class JsonResult {
private String status;
private Object data;
public static final String OK = "ok";
public static final String SUCCESS = "success";
public static final String ERROR = "error";
public String getStatus()
{
return status;
}
public void setStatus(String status)
{
this.status = status;
}
public Object getData()
{
return data;
}
public void setData(Object data)
{
this.data = data;
}
@Override
public String toString()
{
//Gson gson = new GsonBuilder().setDateFormat("yyyy-MM-dd HH:mm:ss").create();
Gson gson = new GsonBuilder().setDateFormat("yyyy-MM-dd").create();
return gson.toJson(this);
}
}struts-home.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
"http://struts.apache.org/dtds/struts-2.3.dtd">
<struts>
<package name="home_package" namespace="/sys" extends="base-default">
<action name="home_*" class="com.rk.home.action.HomeAction" method="{1}">
<result name="home">/WEB-INF/jsp/home/home.jsp</result>
<result name="{1}">/WEB-INF/jsp/home/{1}.jsp</result>
</action>
<action name="login_*" class="loginAction" method="{1}">
<result name="{1}">/WEB-INF/jsp/{1}.jsp</result>
<result name="loginUI">/WEB-INF/jsp/loginUI.jsp</result>
<result name="noPermissionUI">/WEB-INF/jsp/noPermissionUI.jsp</result>
<result name="home" type="redirectAction">
<param name="actionName">home</param>
</result>
<result name="toLoginUI" type="redirectAction">
<param name="actionName">toLoginUI</param>
</result>
</action>
</package>
<package name="sysHomeJson-action" namespace="/sys" extends="json-default">
<action name="home_getUserJson2" class="com.rk.home.action.HomeAction" method="getUserJson2">
<result type="json">
<param name="root">return_map</param>
</result>
</action>
</package>
</struts>知识点（1）：json-default
struts2-json-plugin-2.3.29.jar内有一个struts-plugin.xml文件
在struts-plugin.xml文件中定义了json-default，而它继承自struts-default包。struts-plugin.xml文件内容如下：
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN" "http://struts.apache.org/dtds/struts-2.3.dtd"> <struts> <package name="json-default" extends="struts-default"> <result-types> <result-type name="json" class="org.apache.struts2.json.JSONResult"/> <result-type name="jsonActionRedirect" class="org.apache.struts2.json.JSONActionRedirectResult"/> </result-types> <interceptors> <interceptor name="json" class="org.apache.struts2.json.JSONInterceptor"/> <interceptor name="jsonValidation" class="org.apache.struts2.json.JSONValidationInterceptor"/> <!-- Sample JSON validation stack --> <interceptor-stack name="jsonValidationWorkflowStack"> <interceptor-ref name="basicStack"/> <interceptor-ref name="validation"> <param name="excludeMethods">input,back,cancel</param> </interceptor-ref> <interceptor-ref name="jsonValidation"/> <interceptor-ref name="workflow"/> </interceptor-stack> </interceptors> </package> </struts>
注意：<pagekage>中的extends="base-default"，如果有多个，中间可以用“,”分隔。
<package name="" extends="json-default,struts-default">
这样的继承，要确保父包里面不能有重复的 action名，要不然，子包不知道 调用那个。
2、JSP页面
在主页面home.jsp中添加链接，会在空白页面打开
<s:a action="home_complainAddUI" namespace="/sys" target="_blank">我要投诉</s:a>
complainAddUI.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<%@include file="/common/header.jsp"%>
<title>我要投诉</title>
<script type="text/javascript" src="${basePath}/js/ueditor/ueditor.config.js"></script>
<script type="text/javascript" src="${basePath}/js/ueditor/ueditor.all.js"></script>
<script type="text/javascript" src="${basePath}/js/ueditor/lang/zh-cn/zh-cn.js"></script>
<script type="text/javascript">
window.UEDITOR_HOME_URL = "${basePath}/js/ueditor";
window.onload = function(){
var ue = UE.getEditor("editor");
}
//根据部门查询该部门下的用户列表
function doSelectDept(){
//1、获取部门
var dept = $('#toCompDept option:selected').val();
if(dept != ""){
//2、根据部门查询列表
$.ajax({
url:"${basePath}/sys/home_getUserJson2.action",
data:{"dept":dept},
type:"post",
dataType:"json",//返回数据类型
success:function(result){
//2.1、将用户列表设置到被投诉人下拉框中
if(result != null && result != "" && result != undefined){
if("success" == result.status){
var toCompName = $('#toCompName');
toCompName.empty();
$.each(result.data,function(index,user){
toCompName.append("<option value='" + user.name + "'>"+user.name+"</option>");
});
}
else{
alert("获取被投诉人列表失败");
}
}
else{
alert("被投诉人列表似乎不存在");
}
},
error:function(){
alert("获取被投诉人列表：AJAX请求失败！");
}
});
}
else{
//清空被投诉人列表下拉框
$('#toCompName').empty();
}
}
//提交表单
function doSubmit(){
//1、提交表单并保存
$.ajax({
url:"${basePath}/sys/home_complainAdd.action",
data:$('#form').serialize(),
type:"post",
ansy:false,
success:function(result){
if(result == "success"){
//2、提示用户投诉成功
alert("投诉成功！");
//3、刷新父窗口
window.opener.parent.location.reload(true);
//4、关闭当前窗口
window.close();
}
else{
alert("投诉失败！");
}
},
error:function(){
alert("投诉：AJAX请求失败");
}
});
}
</script>
</head>
<body>
<form id="form" name="form" action="" method="post" enctype="multipart/form-data">
<div class="vp_d_1">
<div > </div>
<div class="vp_d_1_1">
<div class="content_info">
<div class="c_crumbs"><div><b></b><strong>工作主页</strong> - 我要投诉</div></div>
<div class="tableH2">我要投诉</div>
<table id="baseInfo" width="100%" align="center" class="list" border="0" cellpadding="0" cellspacing="0" >
<tr>
<td class="tdBg" width="250px">投诉标题：</td>
<td><s:textfield name="comp.compTitle"/></td>
</tr>
<tr>
<td class="tdBg">被投诉人部门：</td>
<td>
<s:select id="toCompDept" name="user.dept" list="#{'':'请选择','部门A':'部门A','部门B':'部门B'}"
onchange="doSelectDept()"></s:select>
</td>
</tr>
<tr>
<td class="tdBg">被投诉人姓名：</td>
<td>
<select id="toCompName" name="comp.toCompName">
</select>
</td>
</tr>
<tr>
<td class="tdBg">投诉内容：</td>
<td><s:textarea id="editor" name="comp.compContent" cssStyle="width:90%;height:160px;" /></td>
</tr>
<tr>
<td class="tdBg">是否匿名投诉：</td>
<td><s:radio name="comp.isAnonymous" list="#{'false':'非匿名投诉','true':'匿名投诉' }" value="true"/></td>
</tr>
</table>
<s:hidden name="comp.compCompany" value="%{#session.SYS_USER.dept}"/>
<s:hidden name="comp.compName" value="%{#session.SYS_USER.name}"/>
<s:hidden name="comp.compMobile" value="%{#session.SYS_USER.mobile}"/>
<div class="tc mt20">
<input type="button" class="btnB2" value="保存" onclick="doSubmit()"/>
<input type="button" onclick="javascript:window.close()" class="btnB2" value="关闭" />
</div>
</div></div>
<div > </div>
</div>
</form>
</body>
</html>知识点（1）：获取select的值
var dept = $('#toCompDept option:selected').val();知识点（2）：清空、迭代
var toCompName = $('#toCompName');
toCompName.empty();
$.each(result.data,function(index,user){
toCompName.append("<option value='" + user.name + "'>"+user.name+"</option>");
});知识点（3）：原窗口的刷新
window.opener.parent.location.reload(true);
知识点（4）：表单元素的序列化
$('#form').serialize()免责声明：本站发布的内容（图片、视频和文字）以原创、转载和分享为主，文章观点不代表本网站立场，如果涉及侵权请联系站长邮箱：is@yisu.com进行举报，并提供相关证据，一经查实，将立刻删除涉嫌侵权内容。
