Spring Boot刪除Whitelabel錯誤頁面我正在嘗試刪除白標錯誤頁面，所以我所做的是為“/ error”創建了一個控制器映射，@RestControllerpublic class IndexController {
@RequestMapping(value = "/error")
public String error() {
return "Error handling";
}}但現在我收到了這個錯誤。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不知道我做錯了什么。請指教。編輯：已經添加 error.whitelabel.enabled=false 到application.properties文件中，仍然會收到相同的錯誤
3 回答
繁花如伊
TA貢獻2012條經驗 獲得超12個贊
您需要將代碼更改為以下內容：
@RestControllerpublic 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;
}}您的代碼不起作用，因為BasicErrorController當您沒有指定實現時，Spring Boot會自動將其注冊為Spring Bean ErrorController。
要看到這個事實，只需導航到ErrorMvcAutoConfiguration.basicErrorController 這里。
慕虎7371278
TA貢獻1802條經驗 獲得超4個贊
如果你想要一個更“JSONish”的響應頁面，你可以試試這樣的東西：
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);
}}添加回答
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