Spring中的@CrossOrigin注解的使用详细解读

Caused by: org.springframework.core.annotation.AnnotationConfigurationException: In annotation [org.springframework.web.bind.annotation.CrossOrigin] declared on public java.lang.String com.arhorchin.securitit.webannotations.CrossOriginController.crossOriginOrigins(java.util.Map) throws java.lang.Exception and synthesized from [@org.springframework.web.bind.annotation.CrossOrigin(maxAge=-1, methods=[], exposedHeaders=[], origins=[http://localhost:9299], allowedHeaders=[], value=[http://localhost:92991], allowCredentials=)], attribute 'origins' and its alias 'value' are present with values of [{http://localhost:9299}] and [{http://localhost:92991}], but only one is permitted.

package com.arhorchin.securitit.webannotations;

import java.util.Map;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.RequestHeader;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;

/**
 * @author Securitit.
 * @note 演示@CrossOrigin注解使用方法.
 */
@Controller
@RequestMapping("/WebAnnotations")
public class CrossOriginController {

    /**
     * logger.
     */
    private Logger logger = LoggerFactory.getLogger(CrossOriginController.class);

    /**
     * 未使用@CrossOrigin.
     */
    @ResponseBody
    @RequestMapping(
            value = "/UnCrossOrigin.do",
            method = RequestMethod.GET)
    public String unCrossOrigin(@RequestHeader Map<String, String> requestHeaderMap) throws Exception {
        logger.info("@CrossOrigin use default value.");
        return "@CrossOrigin use default value.";
    }
    
    /**
     * 使用默认值的@CrossOrigin.
     */
    @ResponseBody
    @RequestMapping(
            value = "/CrossOrigin.do",
            method = RequestMethod.GET)
    @CrossOrigin
    public String crossOrigin(@RequestHeader Map<String, String> requestHeaderMap) throws Exception {
        logger.info("@CrossOrigin use default value.");
        return "@CrossOrigin use default value.";
    }
    
    /**
     * 指定origins属性的@CrossOrigin.
     */
    @ResponseBody
    @RequestMapping(
            value = "/CrossOriginOrigins.do",
            method = RequestMethod.GET)
    @CrossOrigin(origins="http://localhost:9299")
    public String crossOriginOrigins(@RequestHeader Map<String, String> requestHeaderMap) throws Exception {
        logger.info("@CrossOrigin with origins.");
        return "@CrossOrigin with origins.";
    }
    
    /**
     * 指定origins、allowedHeaders、exposedHeaders、allowCredentials属性的@CrossOrigin.
     */
    @ResponseBody
    @RequestMapping(
            value = "/CrossOriginOriginsAllowCredentials.do",
            method = RequestMethod.GET)
    @CrossOrigin(origins="http://localhost:9299", allowCredentials="true")
    public String crossOriginAllowedHeadersExposedHeadersAllowCredentials(@RequestHeader Map<String, String> requestHeaderMap) throws Exception {
        logger.info("@CrossOrigin with origins、allowedHeaders、exposedHeaders、allowCredentials.");
        return "@CrossOrigin with origins、allowedHeaders、exposedHeaders、allowCredentials.";
    }

}