struts2——s:doubleselect标签！！！

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doubleselect：

1）<s:doubleselect标签必须要放在<s:form>里面。

2) <s:doubleselect标签默认是竖着显示，要横着显示也很麻烦，要覆盖strut2的css或者覆盖struts2的方法。3）在使用<s:doubleselect标签的时候加上headerKey和headerValue属性出现显示不完整的情况。

4）一级列表需要一个list，而二级列表需要一个map。

5）top代码一级列表当前选中的项。map.get(top.deptno)代表根据部门编号找到map里面对应的员工集合。6）一个jsp页面上出现了两个<s:doubleselect标签也存在显示不完全的现象。

import java.util.HashMap;import java.util.Map;import java.util.Vector;import com.opensymphony.xwork2.ActionSupport;public class UIAction extends ActionSupport {private Vector vector;private Map map;public String execute() throws Exception {vector = new Vector();DeptInfo d1 = new DeptInfo("11", "销售部");DeptInfo d2 = new DeptInfo("22", "网络部");DeptInfo d3 = new DeptInfo("33", "IT中心");vector.add(d1);vector.add(d2);vector.add(d3);Vector vector1 = new Vector();UserInfo u1 = new UserInfo("1", "张三");UserInfo u2 = new UserInfo("2", "李四");UserInfo u3 = new UserInfo("3", "王五");vector1.add(u1);vector1.add(u2);vector1.add(u3);Vector vector2 = new Vector();UserInfo u10 = new UserInfo("10", "小张");UserInfo u20 = new UserInfo("20", "小李");UserInfo u30 = new UserInfo("30", "小王");vector2.add(u10);vector2.add(u20);vector2.add(u30);Vector vector3 = new Vector();UserInfo u100 = new UserInfo("100", "张张");UserInfo u200 = new UserInfo("200", "丽丽");UserInfo u300 = new UserInfo("300", "旺旺");vector3.add(u100);vector3.add(u200);vector3.add(u300);map = new HashMap();map.put(d1.getDeptno(), vector1);map.put(d2.getDeptno(), vector2);map.put(d3.getDeptno(), vector3);return "success";}public Vector getVector() {return vector;}public void setVector(Vector vector) {this.vector = vector;}public Map getMap() {return map;}public void setMap(Map map) {this.map = map;}}

dto：

public class UserInfo {private String userno;private String username;public UserInfo() {}public UserInfo(String userno, String username) {this.userno = userno;this.username = username;}public String getUserno() {return userno;}public void setUserno(String userno) {this.userno = userno;}public String getUsername() {return username;}public void setUsername(String username) {this.username = username;}}

public class DeptInfo {private String deptno;private String deptname;public DeptInfo() {}public DeptInfo(String deptno, String deptname) {this.deptno = deptno;this.deptname = deptname;}public String getDeptno() {return deptno;}public void setDeptno(String deptno) {this.deptno = deptno;}public String getDeptname() {return deptname;}public void setDeptname(String deptname) {this.deptname = deptname;}}

jsp：

html源码：

<body><form id="ui" name="ui" onsubmit="return true;" action="/ui/ui.action;jsessionid=F3DF27784FF8329CDA10ADAD186B6345" method="post"><table class="wwFormTable"><tr> <td class="tdLabel"></td> <td><select name="selectname" id="selectid" onchange="selectidRedirect(this.options.selectedIndex)"> <option value="11">销售部</option> <option value="22">网络部</option> <option value="33">IT中心</option></select><br /><select name="doubleselectname" id="doubleselectid"></select><mce:script type="text/javascript"></mce:script> </td></tr></table></form></body>

<s:set name="pc" value="#{'广东省':{'广州市','深圳市','珠海市'},'江苏省':{'南京市','苏州市','扬州市'},'河南省':{'郑州市','洛阳市','开封市','南阳市'}}" /><s:form><s:doubleselectid="selectid"name="selectname"list="#pc.keySet()"doubleName="doubleselectname" doubleList="#pc[top]"doubleId="doubleselectid"doubleName="doubleselectname"/></s:form>

效果

第二种做法：

action：