添加 web 模块, 提供一个统一的 ServletUtil

web/pom.xml

@@ -0,0 +1,76 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <parent>
+        <artifactId>jutil</artifactId>
+        <groupId>cn.reghao.jutil</groupId>
+        <version>1.0.0-SNAPSHOT</version>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+
+    <artifactId>web</artifactId>
+
+    <properties>
+        <maven.compiler.source>11</maven.compiler.source>
+        <maven.compiler.target>11</maven.compiler.target>
+    </properties>
+
+    <dependencyManagement>
+        <dependencies>
+            <dependency>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-dependencies</artifactId>
+                <version>2.3.8.RELEASE</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
+        </dependencies>
+    </dependencyManagement>
+
+    <dependencies>
+        <dependency>
+            <groupId>cn.reghao.jutil</groupId>
+            <artifactId>jdk</artifactId>
+            <version>1.0.0-SNAPSHOT</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>com.google.guava</groupId>
+            <artifactId>guava</artifactId>
+            <version>28.0-jre</version>
+        </dependency>
+
+        <dependency>
+            <groupId>io.jsonwebtoken</groupId>
+            <artifactId>jjwt</artifactId>
+            <version>0.9.1</version>
+        </dependency>
+
+        <dependency>
+            <groupId>javax.xml.bind</groupId>
+            <artifactId>jaxb-api</artifactId>
+            <version>2.3.0</version>
+        </dependency>
+        <dependency>
+            <groupId>com.sun.xml.bind</groupId>
+            <artifactId>jaxb-impl</artifactId>
+            <version>2.3.0</version>
+        </dependency>
+        <dependency>
+            <groupId>com.sun.xml.bind</groupId>
+            <artifactId>jaxb-core</artifactId>
+            <version>2.3.0</version>
+        </dependency>
+        <dependency>
+            <groupId>javax.activation</groupId>
+            <artifactId>activation</artifactId>
+            <version>1.1.1</version>
+        </dependency>
+    </dependencies>
+</project>

web/src/main/java/cn/reghao/jutil/web/ServletUtil.java

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+package cn.reghao.jutil.web;
+
+import cn.reghao.jutil.jdk.serializer.JsonConverter;
+import org.springframework.util.StringUtils;
+import org.springframework.web.context.request.RequestContextHolder;
+import org.springframework.web.context.request.ServletRequestAttributes;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import javax.servlet.http.HttpSession;
+import java.io.BufferedReader;
+import java.io.IOException;
+
+/**
+ * @author reghao
+ * @date 2021-06-02 13:16:58
+ */
+public class ServletUtil {
+    public static Long getUserId() {
+        String userId = getRequest().getHeader("x-user-id");
+        if (userId != null) {
+            return Long.parseLong(userId);
+        }
+
+        return 0L;
+    }
+
+    public static HttpSession getSession() {
+        return getRequest().getSession();
+    }
+
+    public static Object getBody(HttpServletRequest servletRequest, Class<?> clazz) throws IOException {
+        StringBuilder body = new StringBuilder();
+        BufferedReader reader = servletRequest.getReader();
+        String line;
+        while (null != (line = reader.readLine())) {
+            body.append(line);
+        }
+        reader.close();
+        return JsonConverter.jsonToObject(body.toString(), clazz);
+    }
+
+    public static String getSessionId() {
+        return getRequest().getSession().getId();
+    }
+
+    /**
+     * 获取 query 参数值
+     *
+     * @param
+     * @return
+     * @date 2021-06-02 下午1:19
+     */
+    public static String getRequestParam(String param, String defaultValue){
+        String parameter = getRequest().getParameter(param);
+        return StringUtils.isEmpty(parameter) ? defaultValue : parameter;
+    }
+
+    public static HttpServletRequest getRequest(){
+        return getServletRequest().getRequest();
+    }
+
+    public static HttpServletResponse getResponse(){
+        return getServletRequest().getResponse();
+    }
+
+    private static ServletRequestAttributes getServletRequest(){
+        return (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
+    }
+}