\u662f\u7684\uff0c\u5f53\u4f60\u7684 Spring Boot \u9879\u76ee\u91c7\u7528\u524d\u540e\u7aef\u5206\u79bb\u67b6\u6784\u65f6\uff0c\u524d\u7aef\u548c\u540e\u7aef\u53ef\u80fd\u4f1a\u8fd0\u884c\u5728\u4e0d\u540c\u7684\u57df\u540d\u6216\u7aef\u53e3\u4e0a\uff0c\u6b64\u65f6\u5c31\u4f1a\u6d89\u53ca\u5230\u8de8\u57df\u8d44\u6e90\u5171\u4eab\uff08Cross-Origin Resource Sharing\uff0cCORS\uff09\u7684\u95ee\u9898\u3002\u8de8\u57df\u95ee\u9898\u662f\u7531\u6d4f\u89c8\u5668\u7684\u540c\u6e90\u7b56\u7565\u5f15\u8d77\u7684\uff0c\u4e3a\u4e86\u589e\u5f3a\u5b89\u5168\u6027\uff0c\u6d4f\u89c8\u5668\u9650\u5236\u4e86\u4ece\u4e00\u4e2a\u6e90\u52a0\u8f7d\u7684\u6587\u6863\u6216\u811a\u672c\u5982\u4f55\u80fd\u4e0e\u6765\u81ea\u53e6\u4e00\u4e2a\u6e90\u7684\u8d44\u6e90\u8fdb\u884c\u4ea4\u4e92\u3002<\/p>\n
\u4e3a\u4e86\u89e3\u51b3\u8de8\u57df\u95ee\u9898\uff0c\u4f60\u53ef\u4ee5\u5728 Spring Boot \u9879\u76ee\u4e2d\u8fdb\u884c\u76f8\u5e94\u7684\u914d\u7f6e\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u89c1\u7684\u89e3\u51b3\u8de8\u57df\u95ee\u9898\u7684\u65b9\u6cd5\uff1a<\/p>\n
@CrossOrigin<\/code> \u6ce8\u89e3\uff1a<\/h3>\n\u5728 Spring Boot \u7684\u63a7\u5236\u5668\u65b9\u6cd5\u4e0a\u4f7f\u7528 @CrossOrigin<\/code> \u6ce8\u89e3\u53ef\u4ee5\u58f0\u660e\u5141\u8bb8\u7684\u8de8\u57df\u8bf7\u6c42\u3002\u4f8b\u5982\uff1a<\/p>\n@RestController\npublic class MyController {\n\n @CrossOrigin(origins = "http:\/\/localhost:8081") \/\/ \u5141\u8bb8\u6765\u81ea http:\/\/localhost:8081 \u7684\u8de8\u57df\u8bf7\u6c42\n @GetMapping("\/api\/data")\n public ResponseEntity<String> fetchData() {\n \/\/ \u5904\u7406\u903b\u8f91\n }\n}\n<\/code><\/pre>\n<\/span><\/a>2. \u5168\u5c40\u914d\u7f6e CORS\uff1a<\/h3>\n\u5728 Spring Boot \u9879\u76ee\u4e2d\uff0c\u4f60\u8fd8\u53ef\u4ee5\u901a\u8fc7\u5168\u5c40\u914d\u7f6e\u6765\u542f\u7528 CORS\u3002\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a WebMvcConfigurer<\/code> \u7684 Bean\uff0c\u5e76\u5728\u5176\u4e2d\u914d\u7f6e\u8de8\u57df\u8bbe\u7f6e\uff1a<\/p>\n@Configuration\npublic class CorsConfig implements WebMvcConfigurer {\n\n @Override\n public void addCorsMappings(CorsRegistry registry) {\n registry.addMapping("\/api\/**")\n .allowedOrigins("http:\/\/localhost:8081") \/\/ \u5141\u8bb8\u7684\u8de8\u57df\u8bf7\u6c42\u6765\u6e90\n .allowedMethods("GET", "POST", "PUT", "DELETE") \/\/ \u5141\u8bb8\u7684\u8bf7\u6c42\u65b9\u6cd5\n .allowCredentials(true) \/\/ \u5141\u8bb8\u53d1\u9001\u51ed\u636e\uff08\u4f8b\u5982\uff0ccookie\uff09\n .maxAge(3600); \/\/ \u9884\u68c0\u8bf7\u6c42\u7684\u7f13\u5b58\u65f6\u95f4\n }\n}\n<\/code><\/pre>\n<\/span><\/a>3. \u4f7f\u7528 Filter \u914d\u7f6e CORS\uff1a<\/h3>\n\u4f60\u8fd8\u53ef\u4ee5\u901a\u8fc7\u81ea\u5b9a\u4e49 Filter \u6765\u5904\u7406\u8de8\u57df\u8bf7\u6c42\u3002\u521b\u5efa\u4e00\u4e2a\u5b9e\u73b0 javax.servlet.Filter<\/code> \u63a5\u53e3\u7684\u8fc7\u6ee4\u5668\uff0c\u5e76\u5728\u5176\u4e2d\u8bbe\u7f6e\u54cd\u5e94\u5934\uff1a<\/p>\n@Component\npublic class CorsFilter implements Filter {\n\n @Override\n public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)\n throws IOException, ServletException {\n HttpServletResponse httpResponse = (HttpServletResponse) response;\n httpResponse.setHeader("Access-Control-Allow-Origin", "http:\/\/localhost:8081");\n httpResponse.setHeader("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE");\n httpResponse.setHeader("Access-Control-Allow-Credentials", "true");\n httpResponse.setHeader("Access-Control-Max-Age", "3600");\n\n chain.doFilter(request, response);\n }\n}\n<\/code><\/pre>\n\u8bf7\u6839\u636e\u4f60\u7684\u5b9e\u9645\u9700\u6c42\u9009\u62e9\u5176\u4e2d\u4e00\u79cd\u6216\u591a\u79cd\u65b9\u6cd5\u6765\u89e3\u51b3\u8de8\u57df\u95ee\u9898\u3002\u786e\u4fdd\u914d\u7f6e\u4e2d\u5305\u542b\u5141\u8bb8\u7684\u6765\u6e90\u3001\u65b9\u6cd5\u548c\u5fc5\u8981\u7684\u5b89\u5168\u8bbe\u7f6e\uff0c\u4ee5\u786e\u4fdd\u5b89\u5168\u800c\u6709\u6548\u7684\u8de8\u57df\u901a\u4fe1\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u662f\u7684\uff0c\u5f53\u4f60\u7684 Spring Boot \u9879\u76ee\u91c7\u7528\u524d\u540e\u7aef\u5206\u79bb\u67b6\u6784\u65f6\uff0c\u524d\u7aef\u548c\u540e\u7aef\u53ef\u80fd\u4f1a\u8fd0\u884c\u5728\u4e0d\u540c\u7684\u57df\u540d\u6216\u7aef\u53e3\u4e0a\uff0c\u6b64\u65f6 […]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[100],"tags":[],"class_list":["post-8621","post","type-post","status-publish","format-standard","hentry","category-springboot"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/8621","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=8621"}],"version-history":[{"count":2,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/8621\/revisions"}],"predecessor-version":[{"id":16642,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/8621\/revisions\/16642"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=8621"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=8621"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=8621"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}