调整Exception类中的消息描述

weixin4j-base/src/main/java/com/foxinmy/weixin4j/api/Pay3Api.java

@@ -344,7 +344,7 @@ public class Pay3Api {
 				writer.newLine();
 			}
 		} catch (IOException e) {
-			throw new WeixinException(e.getMessage());
+			throw new WeixinException(e);
 		} finally {
 			try {
 				if (reader != null) {

weixin4j-base/src/main/java/com/foxinmy/weixin4j/exception/WeixinException.java

@@ -1,7 +1,5 @@
 package com.foxinmy.weixin4j.exception;
 
-import java.io.IOException;
-
 import com.foxinmy.weixin4j.util.StringUtil;
 
 /**
@@ -34,8 +32,8 @@ public class WeixinException extends Exception {
 		super(e);
 	}
 
-	public WeixinException(String msg, IOException ex) {
-		super(msg, ex);
+	public WeixinException(String message, Throwable cause) {
+		super(message, cause);
 	}
 
 	public String getErrorCode() {

weixin4j-base/src/main/java/com/foxinmy/weixin4j/http/weixin/WeixinRequestExecutor.java

@@ -20,6 +20,7 @@ import com.foxinmy.weixin4j.http.entity.FormUrlEntity;
 import com.foxinmy.weixin4j.http.entity.HttpEntity;
 import com.foxinmy.weixin4j.http.entity.StringEntity;
 import com.foxinmy.weixin4j.http.factory.HttpClientFactory;
+import com.foxinmy.weixin4j.http.factory.SimpleHttpClientFactory;
 import com.foxinmy.weixin4j.model.Consts;
 import com.foxinmy.weixin4j.util.StringUtil;
 import com.foxinmy.weixin4j.util.WeixinErrorUtil;
@@ -44,6 +45,7 @@ public class WeixinRequestExecutor {
 	}
 
 	public WeixinRequestExecutor(HttpParams params) {
+		HttpClientFactory.setDefaultFactory(new SimpleHttpClientFactory());
 		this.httpClient = HttpClientFactory.getInstance();
 		this.params = params;
 	}

weixin4j-base/src/main/java/com/foxinmy/weixin4j/http/weixin/WeixinSSLRequestExecutor.java

@@ -1,7 +1,9 @@
 package com.foxinmy.weixin4j.http.weixin;
 
 import java.io.InputStream;
+import java.security.KeyManagementException;
 import java.security.KeyStore;
+import java.security.NoSuchAlgorithmException;
 
 import javax.net.ssl.KeyManagerFactory;
 import javax.net.ssl.SSLContext;
@@ -34,7 +36,7 @@ public class WeixinSSLRequestExecutor extends WeixinRequestExecutor {
 			sslContext.init(kmf.getKeyManagers(), null,
 					new java.security.SecureRandom());
 		} catch (Exception e) {
-			throw new WeixinException(e.getMessage());
+			throw new WeixinException("Key load error", e);
 		}
 		params.setSSLContext(sslContext);
 	}

weixin4j-base/src/main/java/com/foxinmy/weixin4j/token/FileTokenStorager.java

@@ -43,7 +43,7 @@ public class FileTokenStorager implements TokenStorager {
 			}
 			return null;
 		} catch (IOException e) {
-			throw new WeixinException(e.getMessage());
+			throw new WeixinException(e);
 		}
 	}
 
@@ -55,7 +55,7 @@ public class FileTokenStorager implements TokenStorager {
 					new FileOutputStream(new File(String.format("%s/%s.xml",
 							cachePath, cacheKey))));
 		} catch (IOException e) {
-			throw new WeixinException(e.getMessage());
+			throw new WeixinException(e);
 		}
 	}
 }