{"id":429,"date":"2020-05-14T16:05:24","date_gmt":"2020-05-14T08:05:24","guid":{"rendered":"https:\/\/www.zeroheart.xyz\/wordpress\/?p=429"},"modified":"2020-05-14T16:08:46","modified_gmt":"2020-05-14T08:08:46","slug":"%e9%a1%b9%e7%9b%ae%e9%87%8c%e9%9d%a2interceptor%e7%9a%84%e4%bd%bf%e7%94%a8","status":"publish","type":"post","link":"https:\/\/www.zeroheart.xyz\/wordpress\/?p=429","title":{"rendered":"\u9879\u76ee\u91cc\u9762Interceptor\u7684\u4f7f\u7528"},"content":{"rendered":"\n

\u5148\u4e0a\u4ee3\u7801<\/h4>\n\n\n\n
StandardOutJsonSaveInterceptor extends <\/strong>MethodFilterInterceptor<\/pre>\n\n\n\n
interceptor\u6709\u4e0d\u540c\u7684\u5b9e\u73b0\uff0c\u8fd9\u91cc\u7ee7\u627fMethodFilterInterceptor\uff0c\u53ef\u4ee5\u8bbe\u7f6e\u9700\u8981\u62e6\u622a\u7684\u65b9\u6cd5\u3002actionInvocation.invoke();\u4e3a\u5b9e\u9645\u7684\u65b9\u6cd5\u8c03\u7528\u8bed\u53e5\u3002\u6839\u636eresponse\u91cc\u9762\u7684\u5185\u5bb9\u4e0d\u540c\uff0c\u53ef\u4ee5\u5904\u7406\u65b9\u6cd5\u7ed3\u675f\u540e\u7684\u4e8b\u9879\uff0c\u6bd4\u5982\u652f\u4ed8\u6210\u529f\u4e86\uff0c\u8981\u901a\u77e5\u53d1\u8d27\u65b9\u3002\u5931\u8d25\u6216\u8005\u5f02\u5e38\uff0c\u5219\u505a\u5176\u4ed6\u5904\u7406\u3002<\/p>\n\n\n\n
@Override
protected <\/strong>String doIntercept(ActionInvocation actionInvocation){
    String result = null<\/strong>;
    try <\/strong>{
        System.out<\/em><\/strong>.println(\"\u8fdb\u5165StandardOutJsonSaveInterceptor\u62e6\u622a\u5668\"<\/strong>);
        \/\/1.\u6267\u884caction\u65b9\u6cd5
<\/em>        <\/em>result = actionInvocation.invoke();

        \/\/2.\u83b7\u53d6action\u7684response
<\/em>        <\/em>ActionContext actionContext = actionInvocation.getInvocationContext();
        Object value = getResponseValue(actionContext);\/\/value\u662faction\u4e2dresponseWrite(json.toString());\u91cc\u9762json.toString()\u7684\u503c
<\/em>
<\/em>        \/\/3.\u6839\u636eresponse\u5904\u7406
<\/em>        <\/em>handle(value.toString());
    } catch <\/strong>(Exception e) {
        \/\/\u4e0d\u6267\u884c\u53d1\u6d88\u606f\u7684\u64cd\u4f5c
<\/em>        <\/em>e.printStackTrace();
    }
    return <\/strong>result;
}<\/pre>\n\n\n\n
\/**
<\/em> * \u83b7\u53d6action\u91cc\u9762\u7684responseWrite\u7684\u503c
<\/em> * <\/em>@param <\/em><\/strong>actionContext
<\/em><\/strong> <\/em><\/strong>* <\/em>@return
<\/em><\/strong> <\/em><\/strong>* <\/em>@throws <\/em><\/strong>IOException
<\/em> *\/
<\/em>private <\/strong>Object getResponseValue(ActionContext actionContext) throws <\/strong>IOException {
    HttpServletResponse response = (HttpServletResponse) actionContext.get(StrutsStatics.HTTP_RESPONSE<\/em><\/strong>);
    PrintWriter writer = response.getWriter();
    Field ob = ReflectionUtils.findField<\/em>(writer.getClass(),\"ob\"<\/strong>);
    ob.setAccessible(true<\/strong>);
    Object obValue = ReflectionUtils.getField<\/em>(ob, writer);
    Field cb = ReflectionUtils.findField<\/em>(obValue.getClass(),\"cb\"<\/strong>);
    cb.setAccessible(true<\/strong>);
    Object value = ReflectionUtils.getField<\/em>(cb, obValue);
    return <\/strong>value;
}<\/pre>\n\n\n\n
\/**
<\/em> * \u5904\u7406\u53d1\u6d88\u606f\u7b49\u8fc7\u7a0b
<\/em> * <\/em>@param <\/em><\/strong>result
<\/em><\/strong> <\/em><\/strong>*\/
<\/em>private void <\/strong>handle(String result) {
    \/\/\u7b80\u5355\u6253\u5370
<\/em>    <\/em>System.out<\/em><\/strong>.println(\"response:\"<\/strong>+result);
}<\/pre>\n\n\n\n
\u5173\u4e8e\u914d\u7f6e<\/h4>\n\n\n\n
<interceptors<\/strong>>
   <!-- \u5148\u5b9a\u4e49\u62e6\u622a\u5668\u81ea\u5df1\u5199\u7684\u62e6\u622a\u5668\u7c7b name\u968f\u4fbf\u5199 class\u4e3a\u5168\u9650\u5b9a\u540d -->
       <\/em><interceptor name=\"standardOutJsonSaveInterceptor\" class=\"com.yuqiaotech.scm.interceptor.StandardOutJsonSaveInterceptor\"<\/strong>\/>
       <!-- \u52a0\u5230\u81ea\u5df1\u8bbe\u7f6e\u7684\u62e6\u622a\u5668\u6808\u91cc\u8fb9\u53bb -->
       <\/em><interceptor-stack name=\"myStack\"<\/strong>>
       <!--   name\u4e3a\u4e0a\u9762interceptor\u6807\u7b7e\u91cc\u9762\u5b9a\u4e49\u7684name-->
       <\/em><interceptor-ref name=\"standardOutJsonSaveInterceptor\"<\/strong>>
         <param name=\"includeMethods\"<\/strong>>outJsonSaveStandard<\/param<\/strong>>
       <\/interceptor-ref<\/strong>>

      <!--   \u5728\u81ea\u5df1\u914d\u7f6e\u7684\u62e6\u622a\u5668\u57fa\u7840\u4e0a\uff0c\u5fc5\u987b\u6709struts2\u9ed8\u8ba4\u7684\u62e6\u622a\u5668\uff0c\u4e0d\u7136\u51fa\u9519 -->
      <\/em><interceptor-ref name=\"defaultStack\"<\/strong>><\/interceptor-ref<\/strong>>
       <\/interceptor-stack<\/strong>>
<\/interceptors<\/strong>>
<!-- \u5e94\u7528\u62e6\u622a\u5668\u4e0d\u5199\u62e6\u622a\u5668\u4e0d\u751f\u6548 -->
<\/em><default-interceptor-ref name=\"myStack\"<\/strong>\/><\/pre>\n\n\n\n
\u8fd9\u4e2a\u8981\u653e\u5230struts.xml\u6587\u4ef6\u7684package\u8282\u70b9\u4e0b\u9762\u3002<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"
\u5148\u4e0a\u4ee3\u7801 StandardOutJsonSaveInterceptor extends MethodFilte […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[17],"_links":{"self":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/429"}],"collection":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=429"}],"version-history":[{"count":14,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/429\/revisions"}],"predecessor-version":[{"id":443,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/429\/revisions\/443"}],"wp:attachment":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=429"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=429"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=429"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}