文案优化

doc/XXL-JOB官方文档.md

 - 19、提供多版本执行器：不依赖容器版本、不内嵌Jetty版本（通过配置executoraddress替换jetty通讯）等；
 - 20、注册中心支持扩展，除默认基于DB之外，支持扩展接入第三方注册中心如zk、eureka等；
 - 21、依赖Core内部国际化处理；
+- 22、大数据量下任务日志分页优化，时间选择组件支持清空功能可提升速度；
 
 
 ## 七、其他

xxl-job-core/src/main/java/com/xxl/job/core/rpc/netcom/NetComClientProxy.java

 	                    
 	                    // valid response
 						if (response == null) {
-							logger.error(">>>>>>>>>>> xxl-rpc netty response not found.");
-							throw new Exception(">>>>>>>>>>> xxl-rpc netty response not found.");
+							throw new Exception("Network request fail, response not found.");
 						}
 	                    if (response.isError()) {
 	                        throw new RuntimeException(response.getError());

xxl-job-core/src/main/java/com/xxl/job/core/rpc/netcom/jetty/client/JettyClient.java

 			byte[] responseBytes = HttpClientUtil.postRequest(reqURL, requestBytes);
 			if (responseBytes == null || responseBytes.length==0) {
 				RpcResponse rpcResponse = new RpcResponse();
-				rpcResponse.setError("RpcResponse byte[] is null");
+				rpcResponse.setError("Network request fail, RpcResponse byte[] is null");
 				return rpcResponse;
             }
 
 			logger.error(e.getMessage(), e);
 
 			RpcResponse rpcResponse = new RpcResponse();
-			rpcResponse.setError("Client-error:" + e.getMessage());
+			rpcResponse.setError("Network request error: " + e.getMessage());
 			return rpcResponse;
 		}
 	}

xxl-job-core/src/main/java/com/xxl/job/core/util/HttpClientUtil.java

 				EntityUtils.consume(entity);
 			}
 		} catch (Exception e) {
-			logger.error(e.getMessage(), e);
 			throw e;
 		} finally {
 			httpPost.releaseConnection();