#300 修复微信多媒体文件没有后缀名时下载失败的问题

Author: binarywang

weixin-java-common/src/main/java/me/chanjar/weixin/common/util/http/HttpResponseProxy.java

@@ -0,0 +1,88 @@
+package me.chanjar.weixin.common.util.http;
+
+import jodd.http.HttpResponse;
+import me.chanjar.weixin.common.bean.result.WxError;
+import me.chanjar.weixin.common.exception.WxErrorException;
+import okhttp3.Response;
+import org.apache.http.Header;
+import org.apache.http.client.methods.CloseableHttpResponse;
+
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+/**
+ * <pre>
+ * 三种http框架的response代理类，方便提取公共方法
+ * Created by Binary Wang on 2017-8-3.
+ * </pre>
+ *
+ * @author <a href="https://github.com/binarywang">Binary Wang</a>
+ */
+public class HttpResponseProxy {
+  private CloseableHttpResponse apacheHttpResponse;
+  private HttpResponse joddHttpResponse;
+  private Response okHttpResponse;
+
+  public HttpResponseProxy(CloseableHttpResponse apacheHttpResponse) {
+    this.apacheHttpResponse = apacheHttpResponse;
+  }
+
+  public HttpResponseProxy(HttpResponse joddHttpResponse) {
+    this.joddHttpResponse = joddHttpResponse;
+  }
+
+  public HttpResponseProxy(Response okHttpResponse) {
+    this.okHttpResponse = okHttpResponse;
+  }
+
+  public String getFileName() throws WxErrorException {
+    //由于对象只能由一个构造方法实现，因此三个response对象必定且只有一个不为空
+    if (this.apacheHttpResponse != null) {
+      return this.getFileName(this.apacheHttpResponse);
+    }
+
+    if (this.joddHttpResponse != null) {
+      return this.getFileName(this.joddHttpResponse);
+    }
+
+    if (this.okHttpResponse != null) {
+      return this.getFileName(this.okHttpResponse);
+    }
+
+    //cannot happen
+    return null;
+  }
+
+  private String getFileName(CloseableHttpResponse response) throws WxErrorException {
+    Header[] contentDispositionHeader = response.getHeaders("Content-disposition");
+    if (contentDispositionHeader == null || contentDispositionHeader.length == 0) {
+      throw new WxErrorException(WxError.newBuilder().setErrorMsg("无法获取到文件名").build());
+    }
+
+    return this.extractFileNameFromContentString(contentDispositionHeader[0].getValue());
+  }
+
+  private String getFileName(HttpResponse response) throws WxErrorException {
+    String content = response.header("Content-disposition");
+    return this.extractFileNameFromContentString(content);
+  }
+
+  private String getFileName(Response response) throws WxErrorException {
+    String content = response.header("Content-disposition");
+    return this.extractFileNameFromContentString(content);
+  }
+
+  private String extractFileNameFromContentString(String content) throws WxErrorException {
+    if (content == null || content.length() == 0) {
+      throw new WxErrorException(WxError.newBuilder().setErrorMsg("无法获取到文件名").build());
+    }
+
+    Pattern p = Pattern.compile(".*filename=\"(.*)\"");
+    Matcher m = p.matcher(content);
+    if (m.matches()) {
+      return m.group(1);
+    }
+    throw new WxErrorException(WxError.newBuilder().setErrorMsg("无法获取到文件名").build());
+  }
+
+}

weixin-java-common/src/main/java/me/chanjar/weixin/common/util/http/apache/ApacheMediaDownloadRequestExecutor.java

@@ -3,8 +3,10 @@
 import me.chanjar.weixin.common.bean.result.WxError;
 import me.chanjar.weixin.common.exception.WxErrorException;
 import me.chanjar.weixin.common.util.fs.FileUtils;
+import me.chanjar.weixin.common.util.http.HttpResponseProxy;
 import me.chanjar.weixin.common.util.http.MediaDownloadRequestExecutor;
 import me.chanjar.weixin.common.util.http.RequestHttp;
+import org.apache.commons.io.FilenameUtils;
 import org.apache.commons.lang3.StringUtils;
 import org.apache.http.Header;
 import org.apache.http.HttpHost;
@@ -17,15 +19,12 @@
 import java.io.File;
 import java.io.IOException;
 import java.io.InputStream;
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
 
 /**
  * Created by ecoolper on 2017/5/5.
  */
 public class ApacheMediaDownloadRequestExecutor extends MediaDownloadRequestExecutor<CloseableHttpClient, HttpHost> {
 
-
   public ApacheMediaDownloadRequestExecutor(RequestHttp requestHttp, File tmpDirFile) {
     super(requestHttp, tmpDirFile);
   }
@@ -57,31 +56,17 @@ public File execute(String uri, String queryParam) throws WxErrorException, IOEx
         }
       }
 
-      String fileName = getFileName(response);
+      String fileName = new HttpResponseProxy(response).getFileName();
       if (StringUtils.isBlank(fileName)) {
         return null;
       }
 
-      String[] nameAndExt = fileName.split("\\.");
-      return FileUtils.createTmpFile(inputStream, nameAndExt[0], nameAndExt[1], super.tmpDirFile);
+      return FileUtils.createTmpFile(inputStream, FilenameUtils.getBaseName(fileName), FilenameUtils.getExtension(fileName),
+        super.tmpDirFile);
 
     } finally {
       httpGet.releaseConnection();
     }
   }
 
-  private String getFileName(CloseableHttpResponse response) throws WxErrorException {
-    Header[] contentDispositionHeader = response.getHeaders("Content-disposition");
-    if (contentDispositionHeader == null || contentDispositionHeader.length == 0) {
-      throw new WxErrorException(WxError.newBuilder().setErrorMsg("无法获取到文件名").build());
-    }
-
-    Pattern p = Pattern.compile(".*filename=\"(.*)\"");
-    Matcher m = p.matcher(contentDispositionHeader[0].getValue());
-    if (m.matches()) {
-      return m.group(1);
-    }
-    throw new WxErrorException(WxError.newBuilder().setErrorMsg("无法获取到文件名").build());
-  }
-
 }

weixin-java-common/src/main/java/me/chanjar/weixin/common/util/http/jodd/JoddHttpMediaDownloadRequestExecutor.java

@@ -5,27 +5,25 @@
 import jodd.http.HttpResponse;
 import jodd.http.ProxyInfo;
 import jodd.util.StringPool;
-
 import me.chanjar.weixin.common.bean.result.WxError;
 import me.chanjar.weixin.common.exception.WxErrorException;
 import me.chanjar.weixin.common.util.fs.FileUtils;
+import me.chanjar.weixin.common.util.http.HttpResponseProxy;
 import me.chanjar.weixin.common.util.http.MediaDownloadRequestExecutor;
 import me.chanjar.weixin.common.util.http.RequestHttp;
+import org.apache.commons.io.FilenameUtils;
 import org.apache.commons.lang3.StringUtils;
 
 import java.io.ByteArrayInputStream;
 import java.io.File;
 import java.io.IOException;
 import java.io.InputStream;
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
 
 /**
  * Created by ecoolper on 2017/5/5.
  */
 public class JoddHttpMediaDownloadRequestExecutor extends MediaDownloadRequestExecutor<HttpConnectionProvider, ProxyInfo> {
 
-
   public JoddHttpMediaDownloadRequestExecutor(RequestHttp requestHttp, File tmpDirFile) {
     super(requestHttp, tmpDirFile);
   }
@@ -54,28 +52,15 @@ public File execute(String uri, String queryParam) throws WxErrorException, IOEx
       throw new WxErrorException(WxError.fromJson(response.bodyText()));
     }
 
-    String fileName = getFileName(response);
+    String fileName = new HttpResponseProxy(response).getFileName();
     if (StringUtils.isBlank(fileName)) {
       return null;
     }
 
     InputStream inputStream = new ByteArrayInputStream(response.bodyBytes());
-    String[] nameAndExt = fileName.split("\\.");
-    return FileUtils.createTmpFile(inputStream, nameAndExt[0], nameAndExt[1], super.tmpDirFile);
+    return FileUtils.createTmpFile(inputStream, FilenameUtils.getBaseName(fileName), FilenameUtils.getExtension(fileName),
+      super.tmpDirFile);
   }
 
-  private String getFileName(HttpResponse response) throws WxErrorException {
-    String content = response.header("Content-disposition");
-    if (content == null || content.length() == 0) {
-      throw new WxErrorException(WxError.newBuilder().setErrorMsg("无法获取到文件名").build());
-    }
-
-    Pattern p = Pattern.compile(".*filename=\"(.*)\"");
-    Matcher m = p.matcher(content);
-    if (m.matches()) {
-      return m.group(1);
-    }
-    throw new WxErrorException(WxError.newBuilder().setErrorMsg("无法获取到文件名").build());
-  }
 
 }

weixin-java-common/src/main/java/me/chanjar/weixin/common/util/http/okhttp/OkHttpMediaDownloadRequestExecutor.java

@@ -2,30 +2,28 @@
 
 import me.chanjar.weixin.common.bean.result.WxError;
 import me.chanjar.weixin.common.exception.WxErrorException;
-import me.chanjar.weixin.common.util.fs.FileUtils;
+import me.chanjar.weixin.common.util.http.HttpResponseProxy;
 import me.chanjar.weixin.common.util.http.MediaDownloadRequestExecutor;
 import me.chanjar.weixin.common.util.http.RequestHttp;
-import okhttp3.*;
+import okhttp3.OkHttpClient;
+import okhttp3.Request;
+import okhttp3.Response;
 import okio.BufferedSink;
 import okio.Okio;
+import org.apache.commons.io.FilenameUtils;
 import org.apache.commons.lang3.StringUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import java.io.ByteArrayInputStream;
 import java.io.File;
 import java.io.IOException;
-import java.io.InputStream;
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
 
 /**
  * Created by ecoolper on 2017/5/5.
  */
 public class OkHttpMediaDownloadRequestExecutor extends MediaDownloadRequestExecutor<OkHttpClient, OkHttpProxyInfo> {
   private final Logger logger = LoggerFactory.getLogger(this.getClass());
 
-
   public OkHttpMediaDownloadRequestExecutor(RequestHttp requestHttp, File tmpDirFile) {
     super(requestHttp, tmpDirFile);
   }
@@ -53,31 +51,18 @@ public File execute(String uri, String queryParam) throws WxErrorException, IOEx
       throw new WxErrorException(WxError.fromJson(response.body().string()));
     }
 
-    String fileName = getFileName(response);
+    String fileName = new HttpResponseProxy(response).getFileName();
     if (StringUtils.isBlank(fileName)) {
       return null;
     }
-    String[] nameAndExt = fileName.split("\\.");
-    File file = File.createTempFile(nameAndExt[0], nameAndExt[1], super.tmpDirFile);
+
+    File file = File.createTempFile(FilenameUtils.getBaseName(fileName), FilenameUtils.getExtension(fileName),
+      super.tmpDirFile);
     try (BufferedSink sink = Okio.buffer(Okio.sink(file))) {
       sink.writeAll(response.body().source());
     }
     file.deleteOnExit();
     return file;
   }
 
-  private String getFileName(Response response) throws WxErrorException {
-    String content = response.header("Content-disposition");
-    if (content == null || content.length() == 0) {
-      throw new WxErrorException(WxError.newBuilder().setErrorMsg("无法获取到文件名").build());
-    }
-
-    Pattern p = Pattern.compile(".*filename=\"(.*)\"");
-    Matcher m = p.matcher(content);
-    if (m.matches()) {
-      return m.group(1);
-    }
-    throw new WxErrorException(WxError.newBuilder().setErrorMsg("无法获取到文件名").build());
-  }
-
 }