弹簧启动删除白字错误页
弹簧启动删除白字错误页
提问于 2018-04-16 03:18:48
我试图删除白色标签错误页面，所以我所做的是为“/Error”创建一个控制器映射，
@RestController
public class IndexController {
@RequestMapping(value = "/error")
public String error() {
return "Error handling";
}
}但现在我发现了这个错误。
Exception in thread "AWT-EventQueue-0" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'requestMappingHandlerMapping' defined in class path resource [org/springframework/web/servlet/config/annotation/DelegatingWebMvcConfiguration.class]: Invocation of init method failed; nested exception is java.lang.IllegalStateException: Ambiguous mapping found. Cannot map 'basicErrorController' bean method
public org.springframework.http.ResponseEntity<java.util.Map<java.lang.String, java.lang.Object>> org.springframework.boot.autoconfigure.web.BasicErrorController.error(javax.servlet.http.HttpServletR equest)
to {[/error],methods=[],params=[],headers=[],consumes=[],produces=[],custom=[]}: There is already 'indexController' bean method不知道我是不是做错了什么。请指点。
编辑：
已加error.whitelabel.enabled=false属性文件，仍然会得到相同的错误。
回答 2
Stack Overflow用户
发布于 2018-04-16 11:38:15
需要将代码更改为：
@RestController
public class IndexController implements ErrorController{
private static final String PATH = "/error";
@RequestMapping(value = PATH)
public String error() {
return "Error handling";
}
@Override
public String getErrorPath() {
return PATH;
}
}你的代码无法工作，因为SpringBoot自动注册BasicErrorController作为SpringBean时，当您没有指定ErrorController。
要看到这个事实，只需导航到ErrorMvcAutoConfiguration.basicErrorController
Stack Overflow用户
发布于 2018-04-16 12:45:51
如果想要一个更多的“JSONish”响应页面，可以尝试这样的方法：
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.web.ErrorAttributes;
import org.springframework.boot.autoconfigure.web.ErrorController;
import org.springframework.util.Assert;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.context.request.RequestAttributes;
import org.springframework.web.context.request.ServletRequestAttributes;
import javax.servlet.http.HttpServletRequest;
import java.util.Map;
@RestController
@RequestMapping("/error")
public class SimpleErrorController implements ErrorController {
private final ErrorAttributes errorAttributes;
@Autowired
public SimpleErrorController(ErrorAttributes errorAttributes) {
Assert.notNull(errorAttributes, "ErrorAttributes must not be null");
this.errorAttributes = errorAttributes;
}
@Override
public String getErrorPath() {
return "/error";
}
@RequestMapping
public Map<String, Object> error(HttpServletRequest aRequest){
Map<String, Object> body = getErrorAttributes(aRequest,getTraceParameter(aRequest));
String trace = (String) body.get("trace");
if(trace != null){
String[] lines = trace.split("\n\t");
body.put("trace", lines);
}
return body;
}
private boolean getTraceParameter(HttpServletRequest request) {
String parameter = request.getParameter("trace");
if (parameter == null) {
return false;
}
return !"false".equals(parameter.toLowerCase());
}
private Map<String, Object> getErrorAttributes(HttpServletRequest aRequest, boolean includeStackTrace) {
RequestAttributes requestAttributes = new ServletRequestAttributes(aRequest);
return errorAttributes.getErrorAttributes(requestAttributes, includeStackTrace);
}
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/-100008113
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