{"id":152,"date":"2018-10-06T13:54:27","date_gmt":"2018-10-06T05:54:27","guid":{"rendered":"http:\/\/chenhaitao.me\/?p=152"},"modified":"2018-10-06T13:54:27","modified_gmt":"2018-10-06T05:54:27","slug":"java-web%e6%9c%8d%e5%8a%a1%e5%99%a8%e5%ae%9e%e7%8e%b0%e8%b7%a8%e5%9f%9f%e8%ae%bf%e9%97%ae","status":"publish","type":"post","link":"https:\/\/chenhaitao.com\/.wp-toolkit_I\/2018\/10\/06\/java-web%e6%9c%8d%e5%8a%a1%e5%99%a8%e5%ae%9e%e7%8e%b0%e8%b7%a8%e5%9f%9f%e8%ae%bf%e9%97%ae\/","title":{"rendered":"java web\u670d\u52a1\u5668\u5b9e\u73b0\u8de8\u57df\u8bbf\u95ee"},"content":{"rendered":"

\u4e00\u3001CORS\u6982\u8ff0<\/strong><\/p>\n

\u8de8\u6e90\u8d44\u6e90\u5171\u4eab\u6807\u51c6\u901a\u8fc7\u65b0\u589e\u4e00\u7cfb\u5217 HTTP \u5934\uff0c\u8ba9\u670d\u52a1\u5668\u80fd\u58f0\u660e\u90a3\u4e9b\u6765\u6e90\u53ef\u4ee5\u901a\u8fc7\u6d4f\u89c8\u5668\u8bbf\u95ee\u8be5\u670d\u52a1\u5668\u4e0a\u7684\u5404\u7c7b\u8d44\u6e90\uff08\u5305\u62ecCSS\u3001\u56fe\u7247\u3001JavaScript \u811a\u672c\u4ee5\u53ca\u5176\u5b83\u7c7b\u8d44\u6e90\uff09\u3002\u53e6\u5916\uff0c\u5bf9\u90a3\u4e9b\u4f1a\u5bf9\u670d\u52a1\u5668\u6570\u636e\u9020\u6210\u7834\u574f\u6027\u5f71\u54cd\u7684 HTTP \u8bf7\u6c42\u65b9\u6cd5\uff08\u7279\u522b\u662f GET \u4ee5\u5916\u7684 HTTP \u65b9\u6cd5\uff0c\u6216\u8005\u642d\u914d\u67d0\u4e9bMIME\u7c7b\u578b\u7684POST\u8bf7\u6c42\uff09\uff0c\u6807\u51c6\u5f3a\u70c8\u8981\u6c42\u6d4f\u89c8\u5668\u5fc5\u987b\u5148\u4ee5 OPTIONS \u8bf7\u6c42\u65b9\u5f0f\u53d1\u9001\u4e00\u4e2a\u9884\u8bf7\u6c42(preflight request)\uff0c\u4ece\u800c\u83b7\u77e5\u670d\u52a1\u5668\u7aef\u5bf9\u8de8\u6e90\u8bf7\u6c42\u6240\u652f\u6301 HTTP \u65b9\u6cd5\u3002\u5728\u786e\u8ba4\u670d\u52a1\u5668\u5141\u8bb8\u8be5\u8de8\u6e90\u8bf7\u6c42\u7684\u60c5\u51b5\u4e0b\uff0c\u4ee5\u5b9e\u9645\u7684 HTTP \u8bf7\u6c42\u65b9\u6cd5\u53d1\u9001\u90a3\u4e2a\u771f\u6b63\u7684\u8bf7\u6c42\u3002\u670d\u52a1\u5668\u7aef\u4e5f\u53ef\u4ee5\u901a\u77e5\u5ba2\u6237\u7aef\uff0c\u662f\u4e0d\u662f\u9700\u8981\u968f\u540c\u8bf7\u6c42\u4e00\u8d77\u53d1\u9001\u4fe1\u7528\u4fe1\u606f\uff08\u5305\u62ec Cookies \u548c HTTP \u8ba4\u8bc1\u76f8\u5173\u6570\u636e\uff09\u3002<\/p>\n

\u4e8c\u3001CORS\u539f\u7406<\/strong><\/p>\n

\u4f8b\u5982\uff1a\u57df\u540dA(http:\/\/a.example)\u7684\u67d0 Web \u5e94\u7528\u7a0b\u5e8f\u4e2d\u901a\u8fc7<img>\u6807\u7b7e\u5f15\u5165\u4e86\u57df\u540dB(http:\/\/b.foo)\u7ad9\u70b9\u7684\u67d0\u56fe\u7247\u8d44\u6e90(http:\/\/b.foo\/image.jpg)\u3002\u8fd9\u5c31\u662f\u4e00\u4e2a\u8de8\u57df\u8bf7\u6c42\uff0c\u8bf7\u6c42http\u62a5\u5934\u5305\u542bOrigin: http:\/\/a.example\uff0c\u5982\u679c\u8fd4\u56de\u7684http\u62a5\u5934\u5305\u542b\u54cd\u5e94\u5934 Access-Control-Allow-Origin: http:\/\/a.example \uff08\u6216\u8005Access-Control-Allow-Origin: http:\/\/a.example\uff09\uff0c\u8868\u793a\u57df\u540dB\u63a5\u53d7\u57df\u540dB\u4e0b\u7684\u8bf7\u6c42\uff0c\u90a3\u4e48\u8fd9\u4e2a\u56fe\u7247\u5c31\u8fd0\u884c\u88ab\u52a0\u8f7d\u3002\u5426\u5219\u8868\u793a\u62d2\u7edd\u63a5\u53d7\u8bf7\u6c42\u3002<\/p>\n

\u4e09\u3001CORS\u8de8\u57df\u8bf7\u6c42\u63a7\u5236\u65b9\u6cd5<\/strong><\/p>\n

1.http\u8bf7\u6c42\u5934<\/p>\n

Origin: \u666e\u901a\u7684HTTP\u8bf7\u6c42\u4e5f\u4f1a\u5e26\u6709\uff0c\u5728CORS\u4e2d\u4e13\u95e8\u4f5c\u4e3aOrigin\u4fe1\u606f\u4f9b\u540e\u7aef\u6bd4\u5bf9,\u8868\u660e\u6765\u6e90\u57df\u3002<\/p>\n

Access-Control-Request-Method: \u63a5\u4e0b\u6765\u8bf7\u6c42\u7684\u65b9\u6cd5\uff0c\u4f8b\u5982PUT, DELETE\u7b49\u7b49<\/p>\n

Access-Control-Request-Headers: \u81ea\u5b9a\u4e49\u7684\u5934\u90e8\uff0c\u6240\u6709\u7528setRequestHeader\u65b9\u6cd5\u8bbe\u7f6e\u7684\u5934\u90e8\u90fd\u5c06\u4f1a\u4ee5\u9017\u53f7\u9694\u5f00\u7684\u5f62\u5f0f\u5305\u542b\u5728\u8fd9\u4e2a\u5934\u4e2d<\/p>\n

2.http\u54cd\u5e94\u5934<\/p>\n

\u7136\u540e\u6d4f\u89c8\u5668\u518d\u6839\u636e\u670d\u52a1\u5668\u7684\u8fd4\u56de\u503c\u5224\u65ad\u662f\u5426\u53d1\u9001\u975e\u7b80\u5355\u8bf7\u6c42\u3002\u7b80\u5355\u8bf7\u6c42\u524d\u9762\u8bb2\u8fc7\u662f\u76f4\u63a5\u53d1\u9001\uff0c\u53ea\u662f\u591a\u52a0\u4e00\u4e2aorigin\u5b57\u6bb5\u8868\u660e\u8de8\u57df\u8bf7\u6c42\u7684\u6765\u6e90\u3002\u7136\u540e\u670d\u52a1\u5668\u5904\u7406\u5b8c\u8bf7\u6c42\u4e4b\u540e\uff0c\u4f1a\u518d\u8fd4\u56de\u7ed3\u679c\u4e2d\u52a0\u4e0a\u5982\u4e0b\u63a7\u5236\u5b57\u6bb5<\/p>\n

Access-Control-Allow-Origin: \u5141\u8bb8\u8de8\u57df\u8bbf\u95ee\u7684\u57df\uff0c\u53ef\u4ee5\u662f\u4e00\u4e2a\u57df\u7684\u5217\u8868\uff0c\u4e5f\u53ef\u4ee5\u662f\u901a\u914d\u7b26”*”\u3002\u8fd9\u91cc\u8981\u6ce8\u610fOrigin\u89c4\u5219\u53ea\u5bf9\u57df\u540d\u6709\u6548\uff0c\u5e76\u4e0d\u4f1a\u5bf9\u5b50\u76ee\u5f55\u6709\u6548\u3002\u5373http:\/\/foo.example\/subdir\/ \u662f\u65e0\u6548\u7684\u3002\u4f46\u662f\u4e0d\u540c\u5b50\u57df\u540d\u9700\u8981\u5206\u5f00\u8bbe\u7f6e\uff0c\u8fd9\u91cc\u7684\u89c4\u5219\u53ef\u4ee5\u53c2\u7167\u540c\u6e90\u7b56\u7565<\/p>\n

Access-Control-Allow-Credentials: \u662f\u5426\u5141\u8bb8\u8bf7\u6c42\u5e26\u6709\u9a8c\u8bc1\u4fe1\u606f\uff0c<\/p>\n

Access-Control-Expose-Headers: \u5141\u8bb8\u811a\u672c\u8bbf\u95ee\u7684\u8fd4\u56de\u5934\uff0c\u8bf7\u6c42\u6210\u529f\u540e\uff0c\u811a\u672c\u53ef\u4ee5\u5728<\/p>\n

Access-Control-Max-Age: \u7f13\u5b58\u6b64\u6b21\u8bf7\u6c42\u7684\u79d2\u6570\u3002\u5728\u8fd9\u4e2a\u65f6\u95f4\u8303\u56f4\u5185\uff0c\u6240\u6709\u540c\u7c7b\u578b\u7684\u8bf7\u6c42\u90fd\u5c06\u4e0d\u518d\u53d1\u9001\u9884\u68c0\u8bf7\u6c42\u800c\u662f\u76f4\u63a5\u4f7f\u7528\u6b64\u6b21\u8fd4\u56de\u7684\u5934\u4f5c\u4e3a\u5224\u65ad\u4f9d\u636e\uff0c\u975e\u5e38\u6709\u7528\uff0c\u5927\u5e45\u4f18\u5316\u8bf7\u6c42\u6b21\u6570<\/p>\n

Access-Control-Allow-Methods: \u5141\u8bb8\u4f7f\u7528\u7684\u8bf7\u6c42\u65b9\u6cd5\uff0c\u4ee5\u9017\u53f7\u9694\u5f00<\/p>\n

Access-Control-Allow-Headers: \u5141\u8bb8\u81ea\u5b9a\u4e49\u7684\u5934\u90e8\uff0c\u4ee5\u9017\u53f7\u9694\u5f00\uff0c\u5927\u5c0f\u5199\u4e0d\u654f\u611f<\/p>\n

\u5982\u679c\u7a0b\u5e8f\u733f\u5077\u61d2\u5c06Access-Control-Allow-Origin\u8bbe\u7f6e\u4e3a\uff1aAccess-Control-Allow-Origin: * \u5141\u8bb8\u4efb\u4f55\u6765\u81ea\u4efb\u610f\u57df\u7684\u8de8\u57df\u8bf7\u6c42\uff0c\u90a3\u4e48\u4e45\u5b58\u5728\u88ab DDoS\u653b\u51fb\u7684\u53ef\u80fd\u3002<\/p>\n

\u5b9e\u73b0\u65b9\u5f0f\uff1a<\/p>\n

1\u3001nginx\u914d\u7f6e\u6587\u4ef6\u914d\u7f6e\uff1a<\/p>\n

\n
server {<\/div>\n<\/div>\n
\n
location \/ {<\/div>\n<\/div>\n
\n
if ($request_method = ‘OPTIONS’) {<\/div>\n<\/div>\n
\n
add_header ‘Access-Control-Allow-Origin’ ‘*’;<\/div>\n<\/div>\n
\n
add_header ‘Access-Control-Allow-Credentials’ ‘true’;<\/div>\n<\/div>\n
\n
add_header ‘Access-Control-Allow-Methods’ ‘GET, POST, OPTIONS’;<\/div>\n<\/div>\n
\n
add_header ‘Access-Control-Allow-Headers’ ‘DNT,X-Mx-ReqToken,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type’;<\/div>\n<\/div>\n
\n
# add_header ‘Access-Control-Max-Age’ 3600;<\/div>\n<\/div>\n
\n
add_header ‘Content-Type’ ‘text\/plain charset=UTF-8’;<\/div>\n<\/div>\n
\n
add_header ‘Content-Length’ 0;<\/div>\n<\/div>\n
\n
return 200;<\/div>\n<\/div>\n
\n
}<\/div>\n<\/div>\n
\n
}<\/div>\n<\/div>\n

\u65b9\u6cd52\uff1a\u76f4\u63a5\u5728tomcat\u5b89\u88c5\u76ee\u5f55\u4e0b\u7684lib\u4e2d\u6dfb\u52a0cors-filter-1.7.jar\uff0cjava-property-utils-1.9.jar \u8fd92\u4e2ajar\u5305\uff0c\u5e76\u4e14\u5728\u4e1a\u52a1\u9879\u76ee\u7684web.xml \u4e2d\u914d\u7f6e\u60f3\u8981\u5e94\u7684filter\u914d\u7f6e\u6587\u4ef6\uff1a<\/p>\n

\n
<filter<\/span>><\/span><\/div>\n<\/div>\n
\n
<filter-name<\/span>><\/span>CORS<\/filter-name<\/span>><\/span><\/div>\n<\/div>\n
\n
<filter-class<\/span>><\/span>com.thetransactioncompany.cors.CORSFilter<\/filter-class<\/span>><\/span><\/div>\n<\/div>\n
\n
<init-param<\/span>><\/span><\/div>\n<\/div>\n
\n
<param-name<\/span>><\/span>cors.allowOrigin<\/param-name<\/span>><\/span><\/div>\n<\/div>\n
\n
<param-value<\/span>><\/span>*<\/param-value<\/span>><\/span><\/div>\n<\/div>\n
\n
<\/init-param<\/span>><\/span><\/div>\n<\/div>\n
\n
<init-param<\/span>><\/span><\/div>\n<\/div>\n
\n
<param-name<\/span>><\/span>cors.supportedMethods<\/param-name<\/span>><\/span><\/div>\n<\/div>\n
\n
<param-value<\/span>><\/span>GET,POST,HEAD,PUT,DELETE<\/param-value<\/span>><\/span><\/div>\n<\/div>\n
\n
<\/init-param<\/span>><\/span><\/div>\n<\/div>\n
\n
<init-param<\/span>><\/span><\/div>\n<\/div>\n
\n
<param-name<\/span>><\/span>cors.supportedHeaders<\/param-name<\/span>><\/span><\/div>\n<\/div>\n
\n
<param-value<\/span>><\/span>Accept,Origin,X-Requested-With,Content-Type,Last-Modified<\/param-value<\/span>><\/span><\/div>\n<\/div>\n
\n
<\/init-param<\/span>><\/span><\/div>\n<\/div>\n
\n
<init-param<\/span>><\/span><\/div>\n<\/div>\n
\n
<param-name<\/span>><\/span>cors.exposedHeaders<\/param-name<\/span>><\/span><\/div>\n<\/div>\n
\n
<param-value<\/span>><\/span>Set-Cookie<\/param-value<\/span>><\/span><\/div>\n<\/div>\n
\n
<\/init-param<\/span>><\/span><\/div>\n<\/div>\n
\n
<init-param<\/span>><\/span><\/div>\n<\/div>\n
\n
<param-name<\/span>><\/span>cors.supportsCredentials<\/param-name<\/span>><\/span><\/div>\n<\/div>\n
\n
<param-value<\/span>><\/span>true<\/param-value<\/span>><\/span><\/div>\n<\/div>\n
\n
<\/init-param<\/span>><\/span><\/div>\n<\/div>\n
\n
<\/filter<\/span>><\/span><\/div>\n<\/div>\n
\n
<filter-mapping<\/span>><\/span><\/div>\n<\/div>\n
\n
<filter-name<\/span>><\/span>CORS<\/filter-name<\/span>><\/span><\/div>\n<\/div>\n
\n
<url-pattern<\/span>><\/span>\/*<\/url-pattern<\/span>><\/span><\/div>\n<\/div>\n
\n
<\/filter-mapping<\/span>><\/span><\/div>\n<\/div>\n

\u65b9\u6cd53\uff1a\u81ea\u5df1\u5199\u7684 \u00a0filter\u7c7b\uff0c\u81ea\u5df1\u5728\u5728\u4e1a\u52a1\u9879\u76ee\u4e2d\u914d\u7f6eweb.xml \u4e2d\u914d\u7f6e\u60f3\u8981\u7684xml \u6587\u4ef6\u3002<\/p>\n

\u5982\uff1ajava\u7c7bfilter<\/p>\n

\n
public<\/span> class<\/span> CorsFilter<\/span> implements<\/span> Filter<\/span><\/span>{<\/div>\n<\/div>\n
\n
<\/div>\n<\/div>\n
\n
@Override<\/span><\/div>\n<\/div>\n
\n
public<\/span> void<\/span> init<\/span>(FilterConfig filterConfig)<\/span> throws<\/span> ServletException <\/span>{<\/div>\n<\/div>\n
\n
\/\/ TODO Auto-generated method stub<\/span><\/div>\n<\/div>\n
\n
<\/div>\n<\/div>\n
\n
}<\/div>\n<\/div>\n
\n
<\/div>\n<\/div>\n
\n
@Override<\/span><\/div>\n<\/div>\n
\n
public<\/span> void<\/span> doFilter<\/span>(ServletRequest request, ServletResponse response, FilterChain chain)<\/span> throws<\/span> IOException,<\/span><\/div>\n<\/div>\n
\n
ServletException <\/span>{<\/div>\n<\/div>\n
\n
\/\/ TODO Auto-generated method stub<\/span><\/div>\n<\/div>\n
\n
HttpServletResponse res = (HttpServletResponse) response;<\/div>\n<\/div>\n
\n
res.setContentType(“text\/html;charset=UTF-8”<\/span>);<\/div>\n<\/div>\n
\n
res.setHeader(“Access-Control-Allow-Origin”<\/span>, “*”<\/span>);<\/div>\n<\/div>\n
\n
res.setHeader(“Access-Control-Allow-Methods”<\/span>, “POST, GET, OPTIONS, DELETE”<\/span>);<\/div>\n<\/div>\n
\n
res.setHeader(“Access-Control-Max-Age”<\/span>, “0”<\/span>);<\/div>\n<\/div>\n
\n
res.setHeader(“Access-Control-Allow-Headers”<\/span>, “Origin, No-Cache, X-Requested-With, If-Modified-Since, Pragma, Last-Modified, Cache-Control, Expires, Content-Type, X-E4M-With,userId,token”<\/span>);<\/div>\n<\/div>\n
\n
res.setHeader(“Access-Control-Allow-Credentials”<\/span>, “true”<\/span>);<\/div>\n<\/div>\n
\n
res.setHeader(“XDomainRequestAllowed”<\/span>,“1”<\/span>);<\/div>\n<\/div>\n
\n
chain.doFilter(request, response);<\/div>\n<\/div>\n
\n
}<\/div>\n<\/div>\n
\n
<\/div>\n<\/div>\n
\n
@Override<\/span><\/div>\n<\/div>\n
\n
public<\/span> void<\/span> destroy<\/span>()<\/span> <\/span>{<\/div>\n<\/div>\n
\n
\/\/ TODO Auto-generated method stub<\/span><\/div>\n<\/div>\n
\n
<\/div>\n<\/div>\n
\n
}<\/div>\n<\/div>\n
\n
<\/div>\n<\/div>\n
\n
}<\/div>\n<\/div>\n

\u4e1a\u52a1\u9879\u76ee\u4e2d\u7684web.xml\u914d\u7f6e\u5982\u4e0b\uff1a<\/p>\n

\n
<filter<\/span>><\/span><\/div>\n<\/div>\n
\n
<filter-name<\/span>><\/span>cors<\/filter-name<\/span>><\/span><\/div>\n<\/div>\n
\n
<filter-class<\/span>><\/span>com.tianlong.common.base.CorsFilter<\/filter-class<\/span>><\/span><\/div>\n<\/div>\n
\n
<\/filter<\/span>><\/span><\/div>\n<\/div>\n
\n
<filter-mapping<\/span>><\/span><\/div>\n<\/div>\n
\n
<filter-name<\/span>><\/span>cors<\/filter-name<\/span>><\/span><\/div>\n<\/div>\n
\n
<url-pattern<\/span>><\/span>\/*<\/url-pattern<\/span>><\/span><\/div>\n<\/div>\n
\n
<\/filter-mapping<\/span>><\/span><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

\u4e00\u3001CORS\u6982\u8ff0 \u8de8\u6e90\u8d44\u6e90\u5171\u4eab\u6807\u51c6\u901a\u8fc7\u65b0\u589e\u4e00\u7cfb\u5217 HTTP \u5934\uff0c\u8ba9\u670d\u52a1\u5668\u80fd\u58f0\u660e\u90a3\u4e9b\u6765\u6e90\u53ef\u4ee5\u901a\u8fc7\u6d4f\u89c8\u5668\u8bbf\u95ee\u8be5\u670d\u52a1\u5668\u4e0a\u7684\u5404\u7c7b\u8d44\u6e90\uff08\u5305\u62ecCSS\u3001\u56fe\u7247\u3001JavaScri…<\/p>\n

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