创建商品失败,未知错误
来源：4-3 商品模型模型--商品创建03
慕移动9442383
2019-12-15 01:06
debug之后发现代码走到itemController层以后直接被父类的baseController的分支return出去了 分支2 这个怎么办? 没法进入service层就直接return了status一直是fail,前台未知错误,求解
package com.miaoshaproject.controller;
import com.miaoshaproject.error.BusinessException;
import com.miaoshaproject.error.EmBusinessError;
import com.miaoshaproject.response.CommonReturnType;
import org.springframework.http.HttpStatus;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.ResponseStatus;
import javax.servlet.http.HttpServletRequest;
import java.util.HashMap;
import java.util.Map;
public class BaseController {
public static final String CONTENT_TYPE_FORMED="application/x-www-form-urlencoded";
//定义exceptionHandler解决未被controller层吸收的exception
@ExceptionHandler(Exception.class)
@ResponseStatus(HttpStatus.OK)
@ResponseBody
public Object handlerException(HttpServletRequest req, Exception ex){
CommonReturnType commonReturnType = new CommonReturnType();
Map<String, Object> responseData = new HashMap<>();
if(ex instanceof BusinessException){
BusinessException businessException = (BusinessException)ex;
responseData.put("errCode",businessException.getErrCode());
responseData.put("errMsg",businessException.getErrMsg());
System.out.println("打桩分支1");
}else {
responseData.put("errCode", EmBusinessError.UNKNOWN_EXCEPTION.getErrCode());
responseData.put("errMsg",EmBusinessError.UNKNOWN_EXCEPTION.getErrMsg());
System.out.println("打桩分支2");
}
return CommonReturnType.create(responseData,"fail");
}
}package com.miaoshaproject.controller;
import com.miaoshaproject.controller.viewobject.ItemVO;
import com.miaoshaproject.error.BusinessException;
import com.miaoshaproject.response.CommonReturnType;
import com.miaoshaproject.service.ItemService;
import com.miaoshaproject.service.model.ItemModel;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;
import java.math.BigDecimal;
@Controller("item")
@RequestMapping("/item")
@CrossOrigin(origins = {"*"}, allowCredentials = "true")
public class ItemController extends BaseController {
@Autowired
private ItemService itemService;
//创建商品的Controller
@RequestMapping(value = "/create",method = RequestMethod.POST,consumes = {CONTENT_TYPE_FORMED})
@ResponseBody
public CommonReturnType createItem(@RequestParam(name = "title")String title,
@RequestParam(name = "description") String description,
@RequestParam(name = "price")BigDecimal price,
@RequestParam(name = "stock")Integer stock,
@RequestParam(name = "imgUrl")String imgUrl) throws BusinessException {
//封装Service请求用来创建商品
ItemModel itemModel = new ItemModel();
itemModel.setTitle(title);
itemModel.setDescroption(description);
itemModel.setPrice(price);
itemModel.setStock(stock);
itemModel.setImgUrl(imgUrl);
ItemModel mode = itemService.createItem(itemModel);
ItemVO itemVO = convertVOFromModel(mode);
return CommonReturnType.create(itemVO);
}
private ItemVO convertVOFromModel(ItemModel itemModel){
if(itemModel==null){
return null;
}
ItemVO itemVO = new ItemVO();
BeanUtils.copyProperties(itemModel,itemVO);
return itemVO;
}
}
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5回答
-
- 慕慕5239605
- 2020-09-11 22:25:20
感谢老哥，之前一直找不到错误，用你说的debug调试果然一下子就看到错误解决了
-
- 慕移动9442383
- 2019-12-15 20:04:37
找到bug了 在itemModel中Integer变量stock上我用了@NotBlank,应该用@NotNull才对 所以入参校验直接失败,debug断点打在BaseController中的Ex上变量有详细的描述才定位到Bug,搞了几个小时才搞定 铭记一生
-
- 慕移动9442383
- 2019-12-15 01:37:28
debug断点从itemcontroller的
debug断点从ItemController中的
ItemModel mode = itemService.createItem(itemModel);
方法后就直接跳转到了
InvocableHandlerMethod
这个spring类库中的方法中去了
搞不懂!求解释
-
- 慕移动9442383
- 2019-12-15 01:11:47
前台代码
<!DOCTYPE html><html><head> <meta charset="utf-8"><script src="node_modules\jquery\dist\jquery.js" type="text/javascript"></script><link href="node_modules\bootstrap\dist\css\bootstrap.css"style="stylesheet" type="text/css"><link href="static/assets/global/css/components.css"rel="stylesheet" type="text/css"><link href="static/assets/admin/pages/css/login.css"rel="stylesheet" type="text/css"></head><body class="login"> <div class="content"> <h3 class="form-title">创建商品</h3> <div class="form-group"> <label class="control-label">商品名</label> <div> <input class="form-control" type="text" placeholder="商品名" name="title" id="title"> </div> </div> <div class="form-group"> <label class="control-label">商品描述</label> <div> <input class="form-control" type="text" placeholder="商品描述" name="description" id="description"> </div> </div> <div class="form-group"> <label class="control-label">价格</label> <div> <input class="form-control" type="text" placeholder="价格" name="price" id="price"> </div> </div> <div class="form-group"> <label class="control-label">图片</label> <div> <input class="form-control" type="text" placeholder="图片" name="imgUrl" id="imgUrl"> </div> </div> <div class="form-group"> <label class="control-label">库存</label> <div> <input class="form-control" type="text" placeholder="库存" name="stock" id="stock"> </div> </div> <div class="form-actions"> <button class="btn blue" type="submit" id="create">提交创建</button> </div> </div> </body><script type="text/javascript"> jQuery(document).ready(function(){ $("#create").on("click",function(){ var title = $("#title").val(); var description = $("#description").val(); var price = $("#price").val(); var imgUrl = $("#imgUrl").val(); var stock = $("#stock").val(); if(title==null || title == ""){ alert("商品名不能为空!"); return false; } if(description==null || description == ""){ alert("描述不能为空!"); return false; } if(price==null || price == ""){ alert("价格不能为空!"); return false; } if(imgUrl==null || imgUrl == ""){ alert("图片url不能为空!"); return false; } if(stock==null || stock == ""){ alert("库存不能为空!"); return false; } $.ajax({ type:"POST", contentType:"application/x-www-form-urlencoded", url:"http://localhost:8080/item/create", data:{ "title":title, "description":description, "price":price, "imgUrl":imgUrl, "stock":stock }, xhrFields:{withCredentials:true}, success:function(data){ if(data.status =="success"){ alert("创建成功") }else{ alert("创建失败了"+data.data.errMsg) } }, error:function(data){ alert("创建失败"+data.responseText) } }); return false; }) }) </script></html> -
- 慕移动9442383
- 2019-12-15 01:09:26
2019-12-15 01:08:10.425 INFO 11728 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring DispatcherServlet 'dispatcherServlet'
2019-12-15 01:08:10.426 INFO 11728 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Initializing Servlet 'dispatcherServlet'
2019-12-15 01:08:10.432 INFO 11728 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Completed initialization in 6 ms
2019-12-15 01:08:10.576 INFO 11728 --- [nio-8080-exec-1] com.alibaba.druid.pool.DruidDataSource : {dataSource-1} inited
打桩分支2
这是前台请求发送后,IDEA后台的堆栈信息
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