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Spring Boot删除Whitelabel错误页面

小Q理性的激情农_885 发布于 2022-12-27 14:00

controller

我正在尝试删除白标错误页面,所以我所做的是为"/ error"创建了一个控制器映射,

@RestController
public class IndexController {

    @RequestMapping(value = "/error")
    public String error() {
        return "Error handling";
    }

}

但现在我收到了这个错误.

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>  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

不知道我做错了什么.请指教.

编辑:

已经添加 error.whitelabel.enabled=false 到application.properties文件中,仍然会收到相同的错误

8 个回答

您需要将代码更改为以下内容:
```
@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;
    }
}
```
您的代码不起作用,因为BasicErrorController当您没有指定实现时,Spring Boot会自动将其注册为Spring Bean ErrorController.

要看到这个事实,只需导航到ErrorMvcAutoConfiguration.basicErrorController 这里.
2022-12-27 14:00 回答

纳尼唐_199
Spring boot doc ''错了(他们已修复它):

要关闭它,您可以设置error.whitelabel.enabled = false

应该

要关闭它,您可以设置server.error.whitelabel.enabled = false

2022-12-27 14:01 回答

mobiledu2502886633

您可以通过指定完全删除它:

import org.springframework.context.annotation.Configuration;
import org.springframework.boot.autoconfigure.web.servlet.error.ErrorMvcAutoConfiguration;
...
@Configuration
@EnableAutoConfiguration(exclude = {ErrorMvcAutoConfiguration.class})
public static MainApp { ... }

但是,请注意这样做可能会导致servlet容器的whitelabel页面显示而不是:)

编辑:另一种方法是通过application.yaml.只需输入值:

spring:
  autoconfigure:
    exclude: org.springframework.boot.autoconfigure.web.servlet.error.ErrorMvcAutoConfiguration

文档

对于Spring Boot <2.0,该类位于包中org.springframework.boot.autoconfigure.web.

2022-12-27 14:01 回答

mobiledu2502925453

手册在这里说,你必须设置server.error.whitelabel.enabled以false禁用标准错误页面.也许这就是你想要的？

顺便说一句,我在添加/错误映射后遇到了同样的错误.

2022-12-27 14:01 回答

韩吉碳晶移动电热地毯

如果你想要一个更"JSONish"的响应页面,你可以试试这样的东西:

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);
  }
}

2022-12-27 14:01 回答

mobiledu2502873473

这取决于你的春季靴子版本:

当SpringBootVersion <= 1.2然后使用error.whitelabel.enabled = false

当SpringBootVersion > = 1.3然后使用server.error.whitelabel.enabled = false

2022-12-27 14:03 回答

棂魂買弄l

使用Spring Boot> 1.4.x,您可以这样做:

@SpringBootApplication(exclude = {ErrorMvcAutoConfiguration.class})
public class MyApi {
  public static void main(String[] args) {
    SpringApplication.run(App.class, args);
  }
}

但是如果异常,servlet容器将显示自己的错误页面.

2022-12-27 14:03 回答

书生

在使用Mustache模板的Spring Boot 1.4.1中,将errors.html放在模板文件夹下就足够了:

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="utf-8">
  <title>Error</title>
</head>

<body>
  <h1>Error {{ status }}</h1>
  <p>{{ error }}</p>
  <p>{{ message }}</p>
  <p>{{ path }}</p>
</body>

</html>

可以通过创建拦截器来传递其他变量 /error

2022-12-27 14:03 回答

碳酸钙baby_849

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