diff --git a/.idea/httpRequests/http-client.cookies b/.idea/httpRequests/http-client.cookies
index e69de29..edfe326 100644
--- a/.idea/httpRequests/http-client.cookies
+++ b/.idea/httpRequests/http-client.cookies
@@ -0,0 +1 @@
+# domain	path	name	value	date
diff --git a/.idea/httpRequests/http-requests-log.http b/.idea/httpRequests/http-requests-log.http
index e69de29..edd12c2 100644
--- a/.idea/httpRequests/http-requests-log.http
+++ b/.idea/httpRequests/http-requests-log.http
@@ -0,0 +1,80 @@
+POST http://127.0.0.1:3156/user/add?user_name=user1&email=user1@example.com
+User-Agent: IntelliJ HTTP Client/IntelliJ IDEA 2024.1.4
+Accept-Encoding: br, deflate, gzip, x-gzip
+Accept: */*
+content-length: 0
+
+<> 2026-01-01T214247.200.txt
+
+###
+
+POST http://127.0.0.1:3156/user/add?user_name=user1&email=user1@example.com
+User-Agent: IntelliJ HTTP Client/IntelliJ IDEA 2024.1.4
+Accept-Encoding: br, deflate, gzip, x-gzip
+Accept: */*
+content-length: 0
+
+<> 2026-01-01T214239.200.txt
+
+###
+
+POST http://127.0.0.1:3156/user/add?user_name=user1&email=user1@example.com
+User-Agent: IntelliJ HTTP Client/IntelliJ IDEA 2024.1.4
+Accept-Encoding: br, deflate, gzip, x-gzip
+Accept: */*
+content-length: 0
+
+<> 2026-01-01T214228.200.txt
+
+###
+
+POST http://127.0.0.1:3156/user/add?user_name=user1&email=user1@example.com
+User-Agent: IntelliJ HTTP Client/IntelliJ IDEA 2024.1.4
+Accept-Encoding: br, deflate, gzip, x-gzip
+Accept: */*
+content-length: 0
+
+<> 2026-01-01T213204.200.txt
+
+###
+
+GET http://127.0.0.1:3156/user/add?user_name=test&email=test@example.com
+User-Agent: IntelliJ HTTP Client/IntelliJ IDEA 2024.1.4
+Accept-Encoding: br, deflate, gzip, x-gzip
+Accept: */*
+content-length: 0
+
+<> 2026-01-01T213055.200.txt
+
+###
+
+POST http://127.0.0.1:3156/user/add?user_name=test&email=test@example.com
+User-Agent: IntelliJ HTTP Client/IntelliJ IDEA 2024.1.4
+Accept-Encoding: br, deflate, gzip, x-gzip
+Accept: */*
+content-length: 0
+
+<> 2026-01-01T213022.200.txt
+
+###
+
+POST http://127.0.0.1:3156/user/add?user_name=test&email=test@example.com
+User-Agent: IntelliJ HTTP Client/IntelliJ IDEA 2024.1.4
+Accept-Encoding: br, deflate, gzip, x-gzip
+Accept: */*
+content-length: 0
+
+<> 2026-01-01T213000.200.txt
+
+###
+
+POST http://127.0.0.1:3156/user/add
+User-Agent: IntelliJ HTTP Client/IntelliJ IDEA 2024.1.4
+Accept-Encoding: br, deflate, gzip, x-gzip
+Accept: */*
+content-length: 0
+
+<> 2026-01-01T212548.200.txt
+
+###
+
diff --git a/.idea/inspectionProfiles/Project_Default.xml b/.idea/inspectionProfiles/Project_Default.xml
index 3b8e8ce..abfbb28 100644
--- a/.idea/inspectionProfiles/Project_Default.xml
+++ b/.idea/inspectionProfiles/Project_Default.xml
@@ -4,5 +4,14 @@
     <inspection_tool class="ExtractMethodRecommender" enabled="true" level="WARNING" enabled_by_default="true">
       <option name="minLength" value="620" />
     </inspection_tool>
+    <inspection_tool class="IncorrectHttpHeaderInspection" enabled="true" level="WARNING" enabled_by_default="true">
+      <option name="customHeaders">
+        <set>
+          <option value="&quot;name&quot;" />
+          <option value="user_name=JohnDoe" />
+          <option value="email=john.doe@example.com" />
+        </set>
+      </option>
+    </inspection_tool>
   </profile>
 </component>
\ No newline at end of file
diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index e9078de..277eb3f 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -4,7 +4,20 @@
     <option name="autoReloadType" value="SELECTIVE" />
   </component>
   <component name="ChangeListManager">
-    <list default="true" id="80887c23-e1d3-4a83-9432-ab77876945e9" name="更改" comment="" />
+    <list default="true" id="80887c23-e1d3-4a83-9432-ab77876945e9" name="更改" comment="">
+      <change afterPath="$PROJECT_DIR$/README.md" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/src/main/java/top/gtb520/java/backend/apibackserver/api/p/product.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/.idea/httpRequests/http-client.cookies" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/httpRequests/http-client.cookies" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/.idea/httpRequests/http-requests-log.http" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/httpRequests/http-requests-log.http" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/.idea/inspectionProfiles/Project_Default.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/inspectionProfiles/Project_Default.xml" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/main/java/top/gtb520/java/backend/apibackserver/api/u/user.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/top/gtb520/java/backend/apibackserver/api/u/user.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/target/api-back-server-0.0.1-SNAPSHOT.jar" beforeDir="false" afterPath="$PROJECT_DIR$/target/api-back-server-0.0.1-SNAPSHOT.jar" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/target/api-back-server-0.0.1-SNAPSHOT.jar.original" beforeDir="false" afterPath="$PROJECT_DIR$/target/api-back-server-0.0.1-SNAPSHOT.jar.original" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/target/classes/top/gtb520/java/backend/apibackserver/api/u/user.class" beforeDir="false" afterPath="$PROJECT_DIR$/target/classes/top/gtb520/java/backend/apibackserver/api/u/user.class" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/target/maven-status/maven-compiler-plugin/compile/default-compile/createdFiles.lst" beforeDir="false" afterPath="$PROJECT_DIR$/target/maven-status/maven-compiler-plugin/compile/default-compile/createdFiles.lst" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/target/maven-status/maven-compiler-plugin/compile/default-compile/inputFiles.lst" beforeDir="false" afterPath="$PROJECT_DIR$/target/maven-status/maven-compiler-plugin/compile/default-compile/inputFiles.lst" afterDir="false" />
+    </list>
     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />
     <option name="HIGHLIGHT_NON_ACTIVE_CHANGELIST" value="false" />
@@ -17,6 +30,7 @@
     <option name="RECENT_TEMPLATES">
       <list>
         <option value="Class" />
+        <option value="Interface" />
       </list>
     </option>
   </component>
@@ -26,6 +40,9 @@
   <component name="GoLibraries">
     <option name="indexEntireGoPath" value="true" />
   </component>
+  <component name="HighlightingSettingsPerFile">
+    <setting file="jar://C:/Program Files/Java/jdk-21/lib/src.zip!/java.base/java/lang/String.java" root0="FORCE_HIGHLIGHTING" />
+  </component>
   <component name="KubernetesApiPersistence"><![CDATA[{}]]></component>
   <component name="KubernetesApiProvider"><![CDATA[{
   "isMigrated": true
@@ -43,6 +60,9 @@
   <component name="MavenRunner">
     <option name="skipTests" value="true" />
   </component>
+  <component name="PerforceDirect.Settings">
+    <option name="CHARSET" value="无" />
+  </component>
   <component name="PhpWorkspaceProjectConfiguration" interpreter_name="php-7.4" />
   <component name="ProblemsViewState">
     <option name="selectedTabId" value="CurrentFile" />
@@ -54,6 +74,9 @@
   "associatedIndex": 0
 }]]></component>
   <component name="ProjectId" id="37c4r4f77B6pOqd1XDquAZdazcC" />
+  <component name="ProjectLevelVcsManager">
+    <ConfirmationsSetting value="2" id="Add" />
+  </component>
   <component name="ProjectViewState">
     <option name="flattenModules" value="true" />
     <option name="hideEmptyMiddlePackages" value="true" />
@@ -63,11 +86,14 @@
   </component>
   <component name="PropertiesComponent"><![CDATA[{
   "keyToString": {
+    "ASKED_ADD_EXTERNAL_FILES": "true",
     "HTTP 请求.generated-requests | #2.executor": "Run",
+    "HTTP 请求.generated-requests | #3.executor": "Run",
     "JUnit.MainTests.executor": "Run",
     "Maven.api-back-server [clean].executor": "Run",
     "Maven.api-back-server [install].executor": "Run",
     "Maven.api-back-server [package].executor": "Run",
+    "Maven.api-back-server [test].executor": "Run",
     "RequestMappingsPanelOrder0": "0",
     "RequestMappingsPanelOrder1": "1",
     "RequestMappingsPanelWidth0": "75",
@@ -107,6 +133,12 @@
     </key>
   </component>
   <component name="RunManager" selected="Spring Boot.Main">
+    <configuration name="generated-requests | #2" type="HttpClient.HttpRequestRunConfigurationType" factoryName="HTTP Request" temporary="true" nameIsGenerated="true" path="$APPLICATION_CONFIG_DIR$/scratches/generated-requests.http" index="2" requestIdentifier="#2" runType="运行单个请求">
+      <method v="2" />
+    </configuration>
+    <configuration name="generated-requests | #3" type="HttpClient.HttpRequestRunConfigurationType" factoryName="HTTP Request" temporary="true" nameIsGenerated="true" path="$APPLICATION_CONFIG_DIR$/scratches/generated-requests.http" index="3" requestIdentifier="#3" runType="运行单个请求">
+      <method v="2" />
+    </configuration>
     <configuration name="MainTests" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
       <module name="api-back-server" />
       <extension name="coverage">
@@ -130,11 +162,15 @@
       </method>
     </configuration>
     <list>
+      <item itemvalue="HTTP 请求.generated-requests | #2" />
+      <item itemvalue="HTTP 请求.generated-requests | #3" />
       <item itemvalue="JUnit.MainTests" />
       <item itemvalue="Spring Boot.Main" />
     </list>
     <recent_temporary>
       <list>
+        <item itemvalue="HTTP 请求.generated-requests | #2" />
+        <item itemvalue="HTTP 请求.generated-requests | #3" />
         <item itemvalue="JUnit.MainTests" />
       </list>
     </recent_temporary>
@@ -147,13 +183,16 @@
       <option name="number" value="Default" />
       <option name="presentableId" value="Default" />
       <updated>1767189220570</updated>
-      <workItem from="1767189221590" duration="16084000" />
+      <workItem from="1767189221590" duration="22759000" />
     </task>
     <servers />
   </component>
   <component name="TypeScriptGeneratedFilesManager">
     <option name="version" value="3" />
   </component>
+  <component name="VcsManagerConfiguration">
+    <option name="ADD_EXTERNAL_FILES_SILENTLY" value="true" />
+  </component>
   <component name="VgoProject">
     <integration-enabled>false</integration-enabled>
     <settings-migrated>true</settings-migrated>
diff --git a/src/main/java/top/gtb520/java/backend/apibackserver/api/p/product.java b/src/main/java/top/gtb520/java/backend/apibackserver/api/p/product.java
new file mode 100644
index 0000000..070cc15
--- /dev/null
+++ b/src/main/java/top/gtb520/java/backend/apibackserver/api/p/product.java
@@ -0,0 +1,4 @@
+package top.gtb520.java.backend.apibackserver.api.p;
+
+public class product {
+}
diff --git a/src/main/java/top/gtb520/java/backend/apibackserver/api/u/user.java b/src/main/java/top/gtb520/java/backend/apibackserver/api/u/user.java
index 42baa55..805cad0 100644
--- a/src/main/java/top/gtb520/java/backend/apibackserver/api/u/user.java
+++ b/src/main/java/top/gtb520/java/backend/apibackserver/api/u/user.java
@@ -2,6 +2,7 @@ package top.gtb520.java.backend.apibackserver.api.u;
 
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RestController;
 import top.gtb520.java.backend.apibackserver.db.mysql;
 
@@ -61,8 +62,49 @@ public class user {
         } finally {
             db.close();
         }
+
+        if (usersID.isEmpty()) {
+            usersID.add(Map.of("message", "用户不存在"));
+        }
+
         System.out.println(usersID);
         return usersID;
     }
 
+    /*
+    添加用户
+    路径为：/user/add，协议为POST
+    接收POST参数：user_name, email
+    返回：[{"message": "用户添加成功"}], 如果用户已存在则返回[{"message": "用户已存在"}]
+     */
+
+    @PostMapping("/user/add")
+    public String AddUser(String user_name, String email) throws SQLException {
+        String status;
+
+        String INFO = "UserName: " + user_name + " Email: " + email;
+        echo(BLUE, "url: /user/add " + INFO);
+
+        mysql db = new mysql();
+        try {
+            ResultSet rs = db.query("SELECT * FROM user WHERE user_name = '" + user_name + "'");
+            if (rs.next()) {
+                status = "用户已存在";
+            } else {
+                db.update("INSERT INTO user (user_name, email) VALUES ('" + user_name + "', '" + email + "')");
+                status = "用户添加成功";
+            }
+            db.close();
+        } catch (SQLException e) {
+            throw new RuntimeException(e);
+        }
+        return status;
+    }
+
+    @GetMapping("/user/add")
+    public String AddUser() throws SQLException {
+        echo(BLUE, "url: /user/add");
+        return "添加用户";
+    }
+
 }
diff --git a/target/api-back-server-0.0.1-SNAPSHOT.jar b/target/api-back-server-0.0.1-SNAPSHOT.jar
index 1cf1a9d..bdfb588 100644
Binary files a/target/api-back-server-0.0.1-SNAPSHOT.jar and b/target/api-back-server-0.0.1-SNAPSHOT.jar differ
diff --git a/target/api-back-server-0.0.1-SNAPSHOT.jar.original b/target/api-back-server-0.0.1-SNAPSHOT.jar.original
index aff0cdf..40ae974 100644
Binary files a/target/api-back-server-0.0.1-SNAPSHOT.jar.original and b/target/api-back-server-0.0.1-SNAPSHOT.jar.original differ
diff --git a/target/classes/top/gtb520/java/backend/apibackserver/api/p/product.class b/target/classes/top/gtb520/java/backend/apibackserver/api/p/product.class
new file mode 100644
index 0000000..f929cd4
Binary files /dev/null and b/target/classes/top/gtb520/java/backend/apibackserver/api/p/product.class differ
diff --git a/target/classes/top/gtb520/java/backend/apibackserver/api/u/user.class b/target/classes/top/gtb520/java/backend/apibackserver/api/u/user.class
index a08e6fc..3082828 100644
Binary files a/target/classes/top/gtb520/java/backend/apibackserver/api/u/user.class and b/target/classes/top/gtb520/java/backend/apibackserver/api/u/user.class differ
diff --git a/target/maven-status/maven-compiler-plugin/compile/default-compile/createdFiles.lst b/target/maven-status/maven-compiler-plugin/compile/default-compile/createdFiles.lst
index f12c86f..036d074 100644
--- a/target/maven-status/maven-compiler-plugin/compile/default-compile/createdFiles.lst
+++ b/target/maven-status/maven-compiler-plugin/compile/default-compile/createdFiles.lst
@@ -1,4 +1,5 @@
 top\gtb520\java\backend\apibackserver\db\mysql$DbConfig.class
+top\gtb520\java\backend\apibackserver\api\p\product.class
 top\gtb520\java\backend\apibackserver\db\mysql.class
 top\gtb520\java\backend\apibackserver\utils\YamlFile_Utils.class
 top\gtb520\java\backend\apibackserver\utils\tools.class
diff --git a/target/maven-status/maven-compiler-plugin/compile/default-compile/inputFiles.lst b/target/maven-status/maven-compiler-plugin/compile/default-compile/inputFiles.lst
index 65f4dd1..ba82685 100644
--- a/target/maven-status/maven-compiler-plugin/compile/default-compile/inputFiles.lst
+++ b/target/maven-status/maven-compiler-plugin/compile/default-compile/inputFiles.lst
@@ -1,3 +1,4 @@
+G:\Project\Java\api-back-server\src\main\java\top\gtb520\java\backend\apibackserver\api\p\product.java
 G:\Project\Java\api-back-server\src\main\java\top\gtb520\java\backend\apibackserver\api\u\user.java
 G:\Project\Java\api-back-server\src\main\java\top\gtb520\java\backend\apibackserver\db\mysql.java
 G:\Project\Java\api-back-server\src\main\java\top\gtb520\java\backend\apibackserver\Main.java