Easyui（制作树形菜单，Tab页）

目录

代码区： 

实体类代码演示：

biz层代码演示：

 Servlet代码演示：

 web.xml代码演示：

界面代码演示：

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代码区： 

实体类代码演示：

package com.zking.model;
 
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
 
public class Module implements Serializable{
	private Integer id;
	private Integer pid;
	private String text;
	private String icon;
	private String url;
	private int sort;
	private List<Module> children = new ArrayList<>();
	public Integer getId() {
		return id;
	}
	public void setId(Integer id) {
		this.id = id;
	}
	public Integer getPid() {
		return pid;
	}
	public void setPid(Integer pid) {
		this.pid = pid;
	}
	public String getText() {
		return text;
	}
	public void setText(String text) {
		this.text = text;
	}
	public String getIcon() {
		return icon;
	}
	public void setIcon(String icon) {
		this.icon = icon;
	}
	public String getUrl() {
		return url;
	}
	public void setUrl(String url) {
		this.url = url;
	}
	public int getSort() {
		return sort;
	}
	public void setSort(int sort) {
		this.sort = sort;
	}
	public List<Module> getChildren() {
		return children;
	}
	public void setChildren(List<Module> children) {
		this.children = children;
	}
	@Override
	public String toString() {
		return "Module [id=" + id + ", pid=" + pid + ", text=" + text + ", icon=" + icon + ", url=" + url + ", sort="
				+ sort + ", children=" + children + "]";
	}
	
}

biz层代码演示：

package com.zking.service;
 
import java.util.List;
 
import com.zking.euidemo.IModuleDao;
import com.zking.euidemo.ModuleDao;
import com.zking.model.Module;
 
public class ModuleService implements IModuleService{
	private IModuleDao dao = new ModuleDao();
 
	@Override
	public List<Module> listModel(int pid) {
		
		List<Module> list = dao.getOne(pid);
		
		//递归
		for(Module m: list) {
            //判断表中url是否为空
			if(m.getUrl() == null || "".equals(m.getUrl().trim())) {
				m.setChildren(listModel(m.getId()));
			}
		}
		
		return list;
	}
	
	//测试
	public static void main(String[] args) {
		IModuleService service = new ModuleService();
		List<Module> list = service.listModel(-1);
		list.forEach(t->System.out.println(t));
	}
 
 
}

 Servlet代码演示：

package com.zking.servlet;
 
import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;
 
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
 
import com.alibaba.fastjson.JSON;
import com.zking.model.Module;
import com.zking.service.IModuleService;
import com.zking.service.ModuleService;
@WebServlet("/ModuleServlet")//相当于配置和映射
public class ModuleServlet extends HttpServlet{
	@Override
	protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
		doPost(req, resp);
	}
	
	@Override
	protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
		//设置编码方式
		req.setCharacterEncoding("utf-8");
		resp.setContentType("text/html;charset=UTF-8");
		PrintWriter out = resp.getWriter();
		IModuleService ims = new ModuleService();
		List<Module> list = ims.listModel(-1);
		//将list转为JSON格式
		String str = JSON.toJSONString(list);
		out.write(str);
		out.flush();//刷新
		out.close();//关闭
	}
}

 web.xml代码演示：

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
  <display-name>easyui03</display-name>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>
</web-app>