Spring Boot project maintains global json data

1 Overview

In the past, we deal with every method in the front sent me a request, needs its own configuration data request, then by spring provided @ResponseBody forced into JSON data do, in fact, there has been a lot of duplicate code, what I also can construct a

Tools to achieve only concerned with data that needs to be changed. This gives the tools below.

 

 

public  class JsonMsg {

    private int code;
    private String msg;
    private Map<String, Object> extendInfo = new HashMap<>();

    public int getCode() {
        return code;
    }

    public void setCode(int code) {
        this.code = code;
    }

    public String getMsg() {
        return msg;
    }

    public void setMsg(String msg) {
        this.msg = msg;
    }

    public Map<String, Object> getExtendInfo() {
        return extendInfo;
    }

    public void setExtendInfo(Map<String, Object> extendInfo) {
        this.extendInfo = extendInfo;
    }

    public static JsonMsg success(){
        JsonMsg res = new JsonMsg();
        res.setCode ( 100 );
        res.setMsg ( "Operation Success!" );
         return RES;
    }

    public static JsonMsg fail(){
        JsonMsg res = new JsonMsg();
        res.setCode ( 200 );
        res.setMsg ( "Operation failed!" );
         return RES;
    }

    public JsonMsg addInfo(String key, Object obj){
        this.extendInfo.put(key, obj);
        return this;
    }

}

 

 

Let me give a specific example of use:

　　　　It is a common CRUD Code

 

package com.hrms.controller;

import com.hrms.bean.Department;
import com.hrms.service.DepartmentService;
import com.hrms.util.JsonMsg;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.servlet.ModelAndView;

import java.util.List;

/ ** 
 * @author GenshenWang.nomico
 * @date 2018/3/8.
 */
@Controller
@RequestMapping(value = "/hrms/dept")
public class DepartmentController {

    @Autowired
    DepartmentService departmentService;

    /**
     * Delete
     * @Param deptıd
     * @return
     */
    @RequestMapping(value = "/delDept/{deptId}", method = RequestMethod.DELETE)
    @ResponseBody
    public JsonMsg deleteDept(@PathVariable("deptId") Integer deptId){
        int res = 0;
        if (deptId > 0){
            res = departmentService.deleteDeptById(deptId);
        }
        IF (! = RES. 1 ) {
             return . JsonMsg.fail () addInfo ( "del_dept_error", "delete abnormal" );
        }
        return JsonMsg.success();
    }

    /**
     * Change department
     * @Param deptıd
     * @param department
     * @return
     */
    @RequestMapping(value = "/updateDept/{deptId}", method = RequestMethod.PUT)
    @ResponseBody
    public JsonMsg updateDeptById(@PathVariable("deptId") Integer deptId, Department department){

        int res = 0;
        if (deptId > 0){
            res = departmentService.updateDeptById(deptId, department);
        }
        IF (! RES = 1 ) {
             return . JsonMsg.fail () addInfo ( "update_dept_error", "department update failed" );
        }
        return JsonMsg.success();
    }

    /**
     * Added departments
     * @param department
     * @return
     */
    @RequestMapping(value = "/addDept", method = RequestMethod.PUT)
    @ResponseBody
    public JsonMsg addDept(Department department){
        int res = departmentService.addDept(department);
        if (res != 1){
            return JsonMsg.fail().addInfo("add_dept_error", "添加异常！");
        }
        return JsonMsg.success();
    }

    /**
     * Query department total number of pages of information
     * @return
     */
    @RequestMapping(value = "/getTotalPages", method = RequestMethod.GET)
    @ResponseBody
    Public JsonMsg given numerous version () {

        // Number of rows per page 
        int limit =. 5 ;
         // total number of records 
        int totalItems = departmentService.getDeptCount ();
         int TEMP = totalItems / limit;
         int totalpages = (% totalItems limit == 0) TEMP: TEMP? +1 ;

        return JsonMsg.success().addInfo("totalPages", totalPages);
    }

    /**
     *
     */

    @RequestMapping(value = "/getDeptById/{deptId}", method = RequestMethod.GET)
    @ResponseBody
    public JsonMsg getDeptById(@PathVariable("deptId") Integer deptId){
        Department department = null;
        if (deptId > 0){
            department = departmentService.getDeptById(deptId);
        }
        if (department != null){
            return JsonMsg.success().addInfo("department", department);
        }
        return . JsonMsg.fail () addInfo ( "get_dept_error", "No department information" );
    }

    /**
     * Paging query: Returns the number of pages corresponding data
     * @param pageNo
     * @return
     */
    @RequestMapping(value = "/getDeptList", method = RequestMethod.GET)
    public ModelAndView getDeptList(@RequestParam(value = "pageNo", defaultValue = "1") Integer pageNo){
        Music Videos ModelAndView = new new ModelAndView ( "departmentPage" );
         // Number of rows per page 
        int limit =. 5 ;
         // total number of records 
        int totalItems = departmentService.getDeptCount ();
         int TEMP = totalItems / limit;
         int totalpages = ( ? totalItems% limit == 0) TEMP: TEMP +. 1 ;
         // page starting row (offset + 1) data as in the first page (offset = 0, from 1 (offset + 1) row data start) 
        int offset = (pageNo is not -. 1) * limit;
        List<Department> departments = departmentService.getDeptList(offset, limit);

        mv.addObject("departments", departments)
                .addObject("totalItems", totalItems)
                .addObject("totalPages", totalPages)
                .addObject("curPageNo", pageNo);
        return mv;
    }

    /**
     * Query all sectors Name
     * @return
     */
    @RequestMapping(value = "/getDeptName", method = RequestMethod.GET)
    @ResponseBody
    public JsonMsg getDeptName(){
        List<Department> departmentList = departmentService.getDeptName();
        if (departmentList != null){
            return JsonMsg.success().addInfo("departmentList", departmentList);
        }
        return JsonMsg.fail();
    }


}