RestTemplate的配置和使用

た入场券 2024-01-01 06:43 47阅读 0赞

## 配置 ##

/**
     * resttemplate 配置
     */
    @Configuration
    public class RestTemplateConfig {
    
    	@Bean
    	public SimpleClientHttpRequestFactory simpleClientHttpRequestFactory() {
    
    		SimpleClientHttpRequestFactory facotry = new SimpleClientHttpRequestFactory();
    		/*10s*/
    		facotry.setReadTimeout(10000);
    		/*30s*/
    		facotry.setConnectTimeout(30000);
    		return facotry;
    	}
    
    	@Bean(name = "restTemplate")
    	public RestTemplate restTemplate(SimpleClientHttpRequestFactory factory) {
    		RestTemplate restTemplate = new RestTemplate(factory);
    		restTemplate.setErrorHandler(new RestTemplateErrorHandler());
    		return restTemplate;
    	}
    }

## 配置异常处理 ##

/**
     * 定义处理resttemplate的异常
     */
    public class RestTemplateErrorHandler implements ResponseErrorHandler {
    
    
    	@Override
    	public boolean hasError(ClientHttpResponse response) throws IOException {
            boolean hasError = false;
            int rawStatusCode = response.getRawStatusCode();
            if (rawStatusCode != 200){
                hasError = true;
            }
            return hasError;
    
    	}
    
    	@Override
    	public void handleError(ClientHttpResponse response) throws IOException {
    		String body = IOUtils.toString(response.getBody(), "UTF-8");
    
    		String msg = null;
    		if(StringUtils.isNotEmpty(body)) {
    			JSONObject jsonObj = JSON.parseObject(body);
    			Object msgObj = jsonObj.get("errMsg");
    			if(msgObj == null) {
    				msg = body;
    			} else {
    				msg = msgObj.toString();
    			}
    		}
    
    		RestCustomException ex = new RestCustomException(response.getStatusCode(), body, (msg == null ? "" : msg));
    		throw ex;
    	}
    }

抛出异常配置

public class RestCustomException extends RuntimeException {
    
    	private static final long serialVersionUID = 1L;
    
    	private HttpStatus statusCode;
    
        private String body;
    
        public RestCustomException(String msg) {
            super(msg);
        }
    
        public RestCustomException(HttpStatus statusCode, String body, String msg) {
            super(msg);
            this.statusCode = statusCode;
            this.body = body;
        }
    
        public HttpStatus getStatusCode() {
            return statusCode;
        }
    
        public void setStatusCode(HttpStatus statusCode) {
            this.statusCode = statusCode;
        }
    
        public String getBody() {
            return body;
        }
    
        public void setBody(String body) {
            this.body = body;
        }
    
    }