diff --git a/src/framework/core.c b/src/framework/core.c
index f3f2979..e91e833 100644
--- a/src/framework/core.c
+++ b/src/framework/core.c
@@ -134,7 +134,7 @@ ProgStatus =
   .leader_selected_index = -1,
   .chgtype = ChgType_Auto,
   .chsrc_run_faas = false,
-  .user_agent = NULL,
+  .user_agent = "chsrc",
 };
 
 
@@ -644,12 +644,12 @@ measure_speed_for_url (void *url)
   /**
    * @note 我们用 —L，因为部分链接会跳转到其他地方，比如: RubyChina, npmmirror
    */
-  char *curl_cmd = xy_strcat (8, "curl -qsL ", ipv6,
+  char *curl_cmd = xy_strcat (10, "curl -qsL ", ipv6,
                                     " -o ", os_devnull,
                                     " -w \"%{http_code} %{speed_download}\" -m", time_sec,
                                     " -A ", ProgStatus.user_agent, " ", url);
 
-  // chsrc_info (xy_2strjoin ("测速命令 ", curl_cmd));
+  // chsrc_note2 (xy_2strcat ("测速命令 ", curl_cmd));
   char *curl_buf = xy_run (curl_cmd, 0);
   return curl_buf;
 }
diff --git a/src/recipe/lang/Java.c b/src/recipe/lang/Java.c
index d2f86a7..6722406 100644
--- a/src/recipe/lang/Java.c
+++ b/src/recipe/lang/Java.c
@@ -4,6 +4,11 @@
 
 def_target(pl_java, "java/maven/mvn/maven-daemon/mvnd/gradle");
 
+
+void use_custom_user_agent() {
+  chsrc_custom_user_agent("Maven/3.9.11");
+}
+
 void
 pl_java_prelude ()
 {
@@ -20,10 +25,11 @@ pl_java_prelude ()
   chef_allow_local_mode (this, CanNot, NULL, NULL);
   chef_forbid_english(this);
   chef_allow_user_define(this);
+  use_custom_user_agent();
 
   def_sources_begin()
   {&UpstreamProvider, "https://repo1.maven.org/maven2/",                                  DelegateToUpstream},
-  {&Ali,              "https://maven.aliyun.com/repository/public/",                      DelegateToMirror},
+  {&Ali,              "https://maven.aliyun.com/repository/public/",                      "https://maven.aliyun.com/repository/public/com/tencentcloudapi/tencentcloud-sdk-java/3.1.1033/tencentcloud-sdk-java-3.1.1033-javadoc.jar"},
   {&Huawei,           "https://mirrors.huaweicloud.com/repository/maven/",                "https://mirrors.huaweicloud.com/repository/maven/com/tencentcloudapi/tencentcloud-sdk-java/3.1.1033/tencentcloud-sdk-java-3.1.1033-javadoc.jar"},
   {&HuaweiCdn,        "https://repo.huaweicloud.com/repository/maven/",                   "https://repo.huaweicloud.com/repository/maven/com/tencentcloudapi/tencentcloud-sdk-java/3.1.1033/tencentcloud-sdk-java-3.1.1033-javadoc.jar"},
   {&Tencent,          "https://mirrors.cloud.tencent.com/nexus/repository/maven-public/", "https://mirrors.cloud.tencent.com/nexus/repository/maven-public/com/tencentcloudapi/tencentcloud-sdk-java/3.1.1033/tencentcloud-sdk-java-3.1.1033-javadoc.jar"},
@@ -120,9 +126,6 @@ pl_java_getsrc (char *option)
 }
 
 
-void use_custom_user_agent() {
-  chsrc_custom_user_agent("Maven/3.9.11");
-}
 
 /**
  * @consult https://developer.aliyun.com/mirror/maven