先上demo圖

servlet實現部分：

package servlet;

import java.io.IOException;

import java.util.List;

import javax.servlet.annotation.WebServlet;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import model.User;

import service.UserService;

@SuppressWarnings("serial")

@WebServlet(urlPatterns ="/user")

public class UserServlet extends HttpServlet {

@Override

public void doPost(HttpServletRequest req, HttpServletResponse resp) {

this.doGet(req, resp);

}

/*

/* json {"users":[{"id":1,"name":"mercy","age":22,"sex":3},{"id":2,"name":"lily","age":23,"sex":2},{"id":3,"name":"mily","age":23,"sex":3},{"id":4,"name":"lucy","age":25,"sex":3},{"id":5,"name":"john","age":24,"sex":2}],"total":6}

*/

@Override

public void doGet(HttpServletRequest req, HttpServletResponse resp) {

UserService service=new UserService();

String name=req.getParameter("name");

int page=Integer.parseInt(req.getParameter("page"));

int size=Integer.parseInt(req.getParameter("size"));

byte sex=Byte.parseByte(req.getParameter("sex"));

page=page-1;

List list=service.queryDataLimit(page, size, sex, name);

long count=service.queryAll(sex, name);

//build json

StringBuilder builder=new StringBuilder("{\"users\":[");

String results="";

if(!list.isEmpty()) {

for(User u:list) {

String result = "{\"id\":"+u.getId()+",\"name\":"+"\""+u.getName()+"\""+",\"age\":"+u.getAge()+",\"sex\":"+u.getSex()+"},";

builder.append(result);

}

//get count

results=builder.toString();

results=results.substring(0, results.length()-1)+"]";

results=results+",\"total\":"+count+"}";

}else {

results="{\"users\":[],"+"\"total\":"+count+"}";

}

System.out.println(results);

try {

//set cross domain

resp.setHeader("Access-Control-Allow-Origin", "*");

resp.getWriter().write(results);

} catch (IOException e) {

e.printStackTrace();

}

}

}

前端的話找個分頁插件就ok了，效果圖為

代碼地址：

鏈接：https://pan.baidu.com/s/18ypR3uEwvGImCmDngn0ugA

提取碼：ilul

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