有关pageHelper开源代码的使用。
依赖注入，拦截@LIst注解类的实现：
package com.yumu.airshow.Config;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import com.yumu.airshow.Annotation.*;
import com.yumu.airshow.Model.Page;
import com.yumu.airshow.Utils.ResultUtil;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.*;
import org.springframework.stereotype.Component;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;
import org.springframework.validation.ObjectError;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
/**
* Created by qa on 19/5/7.
*/
@Component
@Aspect
public class ParamValidAspect {
@Before("@annotation(paramValid)")
public void aroundObject(JoinPoint proceedingJoinPoint , ParamValid paramValid) throws Throwable {
Object[] args = proceedingJoinPoint.getArgs();
for (Object argItem : args) {
if (argItem instanceof BindingResult) {//前置验证
BindingResult result = (BindingResult) argItem;
String errorMap = this.validRequestParams(result);
if (errorMap != null) {
throw new ValidException(errorMap);
}
}
}
}
@Around("@annotation(ymInsert)")
public Object aroundObject(ProceedingJoinPoint proceedingJoinPoint , YmInsert ymInsert) throws Throwable {
return this.around(proceedingJoinPoint,"ymInsert");
}
@Around("@annotation(ymUpdate)")
public Object aroundObject(ProceedingJoinPoint proceedingJoinPoint , YmUpdate ymUpdate) throws Throwable {
return this.around(proceedingJoinPoint,"ymUpdate");
}
@Around("@annotation(ymDelete)")
public Object aroundObject(ProceedingJoinPoint proceedingJoinPoint , YmDelete ymDelete) throws Throwable {
return this.around(proceedingJoinPoint,"ymDelete");
}
@Around("@annotation(ymDetail)")
public Object aroundObject(ProceedingJoinPoint proceedingJoinPoint , YmDetail ymDetail) throws Throwable {
return this.around(proceedingJoinPoint,"ymDetail");
}
@Around("@annotation(ymObject)")
public Object aroundObject(ProceedingJoinPoint proceedingJoinPoint , YmObject ymObject) throws Throwable {
return this.around(proceedingJoinPoint,"ymObject");
}
@Around("@annotation(ymList)")
public <T>Object aroundList(ProceedingJoinPoint proceedingJoinPoint , YmList ymList) throws Throwable {
return this.around(proceedingJoinPoint,"ymList");
}
public <T>Object around(ProceedingJoinPoint proceedingJoinPoint , String option) throws Throwable {
Object[] args = proceedingJoinPoint.getArgs();
Page page=null;
for (Object argItem : args) {
System.out.println("argItem:"+argItem);
if (argItem instanceof Page) {//分页设置
page = (Page) argItem;
System.out.println("getPage_num:"+page.getPage_num()+",getPage_size:"+page.getPage_size());
if(!page.getSort().equals(""))
PageHelper.startPage(page.getPage_num(), page.getPage_size(), page.getSort());
else
PageHelper.startPage(page.getPage_num(), page.getPage_size());
}
if (argItem instanceof BindingResult) {//前置验证
BindingResult result = (BindingResult) argItem;
String errorMap = this.validRequestParams(result);
if (errorMap != null) {
return ResultUtil.errorValidated(errorMap);
}
}
}
if(option.equals("ymList")){
List<T> reuslt = new ArrayList<T>();
try {
reuslt = (List<T>) proceedingJoinPoint.proceed();
} catch (Exception e) {
throw new RuntimeException("返回类型不为List:"+ e.getMessage());
}
PageInfo<T> pageList = new PageInfo<T>(reuslt);
return ResultUtil.successList(pageList);
}
Object reuslt = null;
try {
reuslt = (Object) proceedingJoinPoint.proceed();
} catch (Exception e) {
throw new RuntimeException("返回类型不为Object:"+ e.getMessage());
}
System.out.println(reuslt);
int _reuslt_code=-1;
String _reuslt__errorMsg="";
String _reuslt_Msg="";
if (reuslt instanceof Integer) {
_reuslt_code=((Integer) reuslt).intValue();
}
if (reuslt instanceof String) {
_reuslt__errorMsg=reuslt.toString();
}
if (reuslt instanceof HashMap) {
try {
_reuslt_code = Integer.parseInt(((HashMap) reuslt).get("code").toString());
}catch (Exception e){e.printStackTrace();}
try {
Object msg = ((HashMap) reuslt).get("msg");
if(msg != null){
if(_reuslt_code>0)
_reuslt_Msg=msg.toString();
else
_reuslt__errorMsg = msg.toString();
}
}catch (Exception e){e.printStackTrace();}
}
if(option.equals("ymDetail"))return ResultUtil.successDetail(reuslt);
if(option.equals("ymObject")){
if(_reuslt_code==0 || !_reuslt__errorMsg.equals("")) {
if(!_reuslt__errorMsg.equals(""))
return ResultUtil.failDelete(reuslt,_reuslt__errorMsg);
else
return ResultUtil.failDelete(reuslt);
}else{
if(!_reuslt_Msg.equals(""))
return ResultUtil.successObject(reuslt,_reuslt_Msg);
else
return ResultUtil.successObject(reuslt);
}
}
if(option.equals("ymDelete")){
if(_reuslt_code==0 || !_reuslt__errorMsg.equals("")) {
if(!_reuslt__errorMsg.equals(""))
return ResultUtil.failDelete(reuslt,_reuslt__errorMsg);
else
return ResultUtil.failDelete(reuslt);
}else{
if(!_reuslt_Msg.equals(""))
return ResultUtil.successObject(reuslt,_reuslt_Msg);
else
return ResultUtil.successDelete(reuslt);
}
}
if(option.equals("ymUpdate")){
if(_reuslt_code==0 || !_reuslt__errorMsg.equals("")) {
if(!_reuslt__errorMsg.equals(""))
return ResultUtil.failUpdate(reuslt,_reuslt__errorMsg);
else
return ResultUtil.failUpdate(reuslt);
}else{
if(!_reuslt_Msg.equals(""))
return ResultUtil.successObject(reuslt,_reuslt_Msg);
else
return ResultUtil.successUpdate(reuslt);
}
}
if(option.equals("ymInsert")){
if(_reuslt_code==0 || !_reuslt__errorMsg.equals("")) {
if(!_reuslt__errorMsg.equals(""))
return ResultUtil.failInsert(reuslt,_reuslt__errorMsg);
else
return ResultUtil.failInsert(reuslt);
}else{
if(!_reuslt_Msg.equals(""))
return ResultUtil.successObject(reuslt,_reuslt_Msg);
else
return ResultUtil.successInsert(reuslt);
}
}
return ResultUtil.errorException(reuslt);
}
/**
* 校验
*/
private String validRequestParams(BindingResult result) {
if(result.hasErrors()) {
List<ObjectError> list = result.getAllErrors();
String errorMsg="";
for (int i = 0; i < list.size(); i++) {
FieldError error = (FieldError) list.get(i);
errorMsg += error.getField() + error.getDefaultMessage() + ";";
}
return errorMsg;
}
return null;
}
}
配置pageHelper的相关属性类：
package com.yumu.airshow.Config;
import com.github.pagehelper.PageHelper;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import javax.validation.Validation;
import javax.validation.Validator;
import javax.validation.ValidatorFactory;
import java.util.Properties;
@Configuration
public class PageHelperConfig {
@Bean
public PageHelper pageHelper() {
System.out.println("MyBatisConfiguration.pageHelper()");
PageHelper pageHelper = new PageHelper();
Properties p = new Properties();
p.setProperty("offsetAsPageNum", "true");
p.setProperty("rowBoundsWithCount", "true");
p.setProperty("reasonable", "true");
pageHelper.setProperties(p);
return pageHelper;
}
}
请求结果重装工具类的实现：
package com.yumu.airshow.Utils;
import com.github.pagehelper.PageInfo;
import java.util.ArrayList;
import java.util.HashMap;
/**
* Created by qa on 19/5/5.
*/
public class ResultUtil {
/*错误代码一览表
200: '服务器成功返回请求的数据。',//detail---200,no content data={}，list---200, no content data=[]
201: '新建或修改数据成功。',//ok
202: '一个请求已经进入后台排队（异步任务）。',
204: '删除数据成功。',//ok
crud出错：
服务器内部错误：500
400: '发出的请求有错误，服务器没有进行新建或修改数据的操作。',
401: '用户没有权限（令牌、用户名、密码错误）。鉴权 ',
402: 数据格式：
403: '用户得到授权，但是访问是被禁止的。',
404: '发出的请求针对的是不存在的记录，服务器没有进行操作。',
406: '请求的格式不可得。',
407: '手机号码已经存在。',
410: '请求的资源被永久删除，且不会再得到的。',
422: '当创建一个对象时，发生一个验证错误。',
434: 插入数据失败
434: delete error
435: update error
500: '服务器发生错误，请检查服务器。',
502: '网关错误。',
503: '服务不可用，服务器暂时过载或维护。',
504: '网关超时。',
*/
public static Object successInsert(Object object){
HashMap json=new HashMap();
json.put("msg","新增成功！");
json.put("code",200);
if(object==null)
json.put("data",new HashMap());
else
json.put("data",object);
return json;
}
public static Object failInsert(Object object){
return failInsert(object,"新增失败！");
}
public static Object failInsert(Object object, String errorMsg){
HashMap json=new HashMap();
json.put("msg",errorMsg);
json.put("code",434);
if(object==null)
json.put("data",new HashMap());
else
json.put("data",object);
return json;
}
public static Object successUpdate(Object object){
HashMap json=new HashMap();
json.put("msg","更新成功！");
json.put("code",200);
if(object==null)
json.put("data",new HashMap());
else
json.put("data",object);
return json;
}
public static Object failUpdate(Object object){
return failUpdate(object,"更新失败！");
}
public static Object failUpdate(Object object, String errorMsg){
HashMap json=new HashMap();
json.put("msg",errorMsg);
json.put("code",435);
if(object==null)
json.put("data",new HashMap());
else
json.put("data",object);
return json;
}
public static Object successDelete(Object object){
HashMap json=new HashMap();
json.put("msg","删除成功！");
json.put("code",200);
if(object==null)
json.put("data",new HashMap());
else
json.put("data",object);
return json;
}
public static Object failDelete(Object object){
return failDelete(object,"删除失败！");
}
public static Object failDelete(Object object,String errorMsg){
HashMap json=new HashMap();
json.put("msg",errorMsg);
json.put("code",434);
if(object==null)
json.put("data",new HashMap());
else
json.put("data",object);
return json;
}
public static Object successDetail(Object object){
HashMap json=new HashMap();
json.put("msg","获取详情成功！");
json.put("code",200);
if(object==null)
json.put("data",new HashMap());
else
json.put("data",object);
return json;
}
public static Object successObject(Object object){
return failDelete(object,"成功！");
}
public static Object successObject(Object object,String errorMsg){
HashMap json=new HashMap();
json.put("msg",errorMsg);
json.put("code",200);
if(object==null)
json.put("data",new HashMap());
else
json.put("data",object);
return json;
}
public static Object failObject(Object object){
return failDelete(object,"失败！");
}
public static Object failObject(Object object,String errorMsg){
HashMap json=new HashMap();
json.put("msg",errorMsg);
json.put("code",403);
if(object==null)
json.put("data",new HashMap());
else
json.put("data",object);
return json;
}
public static Object successList(PageInfo objectPage){
HashMap json=new HashMap();
json.put("msg","获取列表成功！");
json.put("code",200);
if(objectPage!=null){
HashMap page=new HashMap();
page.put("count_page", objectPage.getPages());
page.put("count_size", objectPage.getTotal());
page.put("current_page", objectPage.getPageNum());
json.put("data",objectPage.getList());
json.put("page",page);
}else{
json.put("data",new ArrayList());
json.put("page",new HashMap());
}
return json;
}
public static Object errorValidated(Object object){
HashMap json=new HashMap();
json.put("msg","数据格式错误！");
json.put("code",402);
if(object==null)
json.put("data",new ArrayList());
else
json.put("data",object);
return json;
}
public static Object failAuthenticate(Object object){
return failDelete(object,"鉴权！");
}
public static Object failAuthenticate(Object object,String errorMsg){
HashMap json=new HashMap();
json.put("msg",errorMsg);
json.put("code",402);
if(object==null)
json.put("data",new ArrayList());
else
json.put("data",object);
return json;
}
public static Object unLogin(Object object,String errorMsg){
HashMap json=new HashMap();
json.put("msg",errorMsg);
json.put("code",499);
if(object==null)
json.put("data",new ArrayList());
else
json.put("data",object);
return json;
}
public static HashMap errorService(String msg){
HashMap json = new HashMap();
json.put("code",407);
if(msg.isEmpty()){
json.put("msg","业务错误！");
} else {
json.put("msg", msg);
}
return json;
}
public static Object errorException(Object object){
HashMap json=new HashMap();
json.put("msg","异常抛错！");
json.put("code",555);
if(object==null)
json.put("data",new ArrayList());
else
json.put("data",object);
return json;
}
}
