zzvar的博客

ref:http://www.tpyyes.com/a/kuozhan/2017/0902/199.htmlpoi导入excel表格数据时报java.lang.IllegalStateException: Cannot get a STRING value from a NUMERIC cell异常是因为在读取cell单元格字符串时，有number类型的数据，因此需要把它转化为纯String类型，这样就不会报错了。报错的地方类似于这样。//获取单元格XSSFCell cell = row.getCe

内容一、异常信息HTTP Status 400 -type Status reportmessageorg.springframework.http.converter.HttpMessageNotWritableException: No converter found for return value of type二、解决办法1、异常异常截图详细信息exceptionorg.springframework.http.converter.HttpMessage

内容一、异常信息HTTP Status 400 -type Status reportmessagedescription The request sent by the client was syntactically incorrect.Apache Tomcat/7.0.37二、解决办法1、造成原因SpringMVC 错误，由于前端界面传递错误参数类型给后台，后台就收参数后，转换参数类型失败导致。2、解决打开浏览器控制台，点击 network 查看传递的参数是什么，然后修

内容一、异常信息严重: Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.springframework.dao.DataIntegrityViolationException: ### Error querying database. Cause: com.mysq