Spring Boot项目中怎么维护全局json数据，很多新手对此不是很清楚，为了帮助大家解决这个难题，下面小编将为大家详细讲解，有这方面需求的人可以来学习下，希望你能有所收获。
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工具类.
public class JsonMsg {
private int code;
private String msg;
private Map 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 getExtendInfo() {
return extendInfo;
}
public void setExtendInfo(Map extendInfo) {
this.extendInfo = extendInfo;
}
public static JsonMsg success(){
JsonMsg res = new JsonMsg();
res.setCode(100);
res.setMsg("操作成功！");
return res;
}
public static JsonMsg fail(){
JsonMsg res = new JsonMsg();
res.setCode(200);
res.setMsg("操作失败！");
return res;
}
public JsonMsg addInfo(String key, Object obj){
this.extendInfo.put(key, obj);
return this;
}
} 下面我给出具体的使用示例:
就是一个普通的CRUD代码
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;
/**
* 删除
* @param deptId
* @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", "删除异常");
}
return JsonMsg.success();
}
/**
* 部门更改
* @param deptId
* @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", "部门更新失败");
}
return JsonMsg.success();
}
/**
* 新增部门
* @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();
}
/**
* 查询部门信息总页码数
* @return
*/
@RequestMapping(value = "/getTotalPages", method = RequestMethod.GET)
@ResponseBody
public JsonMsg getTotalPages(){
//每页显示的记录行数
int limit = 5;
//总记录数
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", "无部门信息");
}
/**
* 分页查询：返回指定页数对应的数据
* @param pageNo
* @return
*/
@RequestMapping(value = "/getDeptList", method = RequestMethod.GET)
public ModelAndView getDeptList(@RequestParam(value = "pageNo", defaultValue = "1") Integer pageNo){
ModelAndView mv = new ModelAndView("departmentPage");
//每页显示的记录行数
int limit = 5;
//总记录数
int totalItems = departmentService.getDeptCount();
int temp = totalItems / limit;
int totalPages = (totalItems % limit== 0) ? temp : temp+1;
//每页的起始行(offset+1)数据，如第一页(offset=0，从第1(offset+1)行数据开始)
int offset = (pageNo - 1)*limit;
List departments = departmentService.getDeptList(offset, limit);
mv.addObject("departments", departments)
.addObject("totalItems", totalItems)
.addObject("totalPages", totalPages)
.addObject("curPageNo", pageNo);
return mv;
}
/**
* 查询所有部门名称
* @return
*/
@RequestMapping(value = "/getDeptName", method = RequestMethod.GET)
@ResponseBody
public JsonMsg getDeptName(){
List departmentList = departmentService.getDeptName();
if (departmentList != null){
return JsonMsg.success().addInfo("departmentList", departmentList);
}
return JsonMsg.fail();
}
} 看完上述内容是否对您有帮助呢？如果还想对相关知识有进一步的了解或阅读更多相关文章，请关注创新互联行业资讯频道，感谢您对创新互联的支持。
