fix(core): HandlerMapping.java

.idea/compiler.xml

@@ -2,6 +2,7 @@
 <project version="4">
 <project version="4">
   <component name="CompilerConfiguration">
   <component name="CompilerConfiguration">
     <annotationProcessing>
     <annotationProcessing>
+      <profile default="true" name="Default" enabled="true" />
       <profile name="Maven default annotation processors profile" enabled="true">
       <profile name="Maven default annotation processors profile" enabled="true">
         <sourceOutputDir name="target/generated-sources/annotations" />
         <sourceOutputDir name="target/generated-sources/annotations" />
         <sourceTestOutputDir name="target/generated-test-sources/test-annotations" />
         <sourceTestOutputDir name="target/generated-test-sources/test-annotations" />

.idea/smartfox_info.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="SmartFoxProjectConfig">
+    <option name="projectInspectionClosed" value="true" />
+  </component>
+</project>
\ No newline at end of file

.idea/vcs.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file

application/src/main/java/com/jeffrey/servlet/HelloServlet.java

@@ -11,8 +11,7 @@ import com.wang.servlet.http.HttpServlet;
 public class HelloServlet extends HttpServlet {
 public class HelloServlet extends HttpServlet {
 
 
     public static void main(String[] args) {
     public static void main(String[] args) {
-        HandlerMapping mapping = new HandlerMapping();
-        mapping.loadResources("application\\src\\main\\webapp\\WEB-INF\\web.xml");
+
     }
     }
 }
 }
 
 

base/src/main/java/com/wang/servlet/core/XmlDomParser.java → application/src/main/java/com/jeffrey/servlet/LoginServlet.java

-package com.wang.servlet.core;
+package com.jeffrey.servlet;
 
 
 /**
 /**
  * @author: Jeffrey
  * @author: Jeffrey
- * @date: 2022/01/23/10:43
+ * @date: 2022/01/23/21:27
  * @description:
  * @description:
  */
  */
-public class XmlDomParser {
-
-
+public class LoginServlet {
 }
 }

application/src/main/webapp/WEB-INF/web.xml

@@ -2,15 +2,29 @@
  "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
  "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
  "http://java.sun.com/dtd/web-app_2_3.dtd" >
  "http://java.sun.com/dtd/web-app_2_3.dtd" >
 
 
-<web-app>
+<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
+         version="4.0"
+>
   <display-name>Archetype Created Web Application</display-name>
   <display-name>Archetype Created Web Application</display-name>
 
 
   <servlet>
   <servlet>
     <servlet-name>HelloServlet</servlet-name>
     <servlet-name>HelloServlet</servlet-name>
-    <servlet-class></servlet-class>
+    <servlet-class>com.jeffrey.servlet.HelloServlet</servlet-class>
   </servlet>
   </servlet>
   <servlet-mapping>
   <servlet-mapping>
     <servlet-name>HelloServlet</servlet-name>
     <servlet-name>HelloServlet</servlet-name>
     <url-pattern>/hello</url-pattern>
     <url-pattern>/hello</url-pattern>
   </servlet-mapping>
   </servlet-mapping>
+
+  <servlet>
+    <servlet-name>LoginServlet</servlet-name>
+    <servlet-class>com.jeffrey.servlet.LoginServlet</servlet-class>
+  </servlet>
+  <servlet-mapping>
+    <servlet-name>LoginServlet</servlet-name>
+    <url-pattern>/login</url-pattern>
+  </servlet-mapping>
+
 </web-app>
 </web-app>

base/src/main/java/com/wang/servlet/core/DispatcherServlet.java

@@ -6,4 +6,9 @@ package com.wang.servlet.core;
  * @description:
  * @description:
  */
  */
 public class DispatcherServlet {
 public class DispatcherServlet {
+
+    private HandlerMapping handlerMapping;
+
+
+
 }
 }

base/src/main/java/com/wang/servlet/core/HandlerMapping.java

 package com.wang.servlet.core;
 package com.wang.servlet.core;
 
 
-import org.w3c.dom.Document;
-import org.w3c.dom.NamedNodeMap;
-import org.w3c.dom.Node;
-import org.w3c.dom.NodeList;
+import com.wang.servlet.http.HttpServlet;
+import lombok.extern.slf4j.Slf4j;
+import org.w3c.dom.*;
 import org.xml.sax.SAXException;
 import org.xml.sax.SAXException;
 
 
 import javax.xml.parsers.DocumentBuilder;
 import javax.xml.parsers.DocumentBuilder;
@@ -12,6 +11,8 @@ import javax.xml.parsers.ParserConfigurationException;
 import java.io.IOException;
 import java.io.IOException;
 import java.util.HashMap;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
 
 
 /**
 /**
  * <p>加载xml 配置文件</p>
  * <p>加载xml 配置文件</p>
@@ -21,72 +22,94 @@ import java.util.Map;
  * @date: 2022/01/23/10:09
  * @date: 2022/01/23/10:09
  * @description:
  * @description:
  */
  */
+@Slf4j
 public class HandlerMapping {
 public class HandlerMapping {
 
 
-    private final String default_xml_path = "src/main/webapp/WEB-INF/web.xml";
+    private static final String XML_PATH_DEFAULT = "src/main/java/webapp/WEB-INF/web.xml";
 
 
-    private static Map<String, HashMap<String, Class>> mapping = new HashMap<>();
+    /**
+     * (映射地址,(name,class))
+     */
+    private final Map<String, NameToClassMapping> mapping = new ConcurrentHashMap<>();
+
+    public HandlerMapping(String location) {
+        loadResources(location);
+    }
+
+    public HandlerMapping() {
+        loadResources();
+    }
 
 
-    public void loadResources(String xmlLocation) {
+    /**
+     * 获取映射对应的Handler的Class文件
+     * @param mappingPath 映射路径
+     * @return Handler.class
+     */
+    public Class<HttpServlet> getHandlerClass(String mappingPath){
+        return mapping.get(mappingPath).getAClass();
+    }
+
+    /**
+     * 获取映射对应的Handler的名字
+     * @param mappingPath 映射路径
+     * @return Handler.servlet-name
+     */
+    public String getHandlerName(String mappingPath){
+        return mapping.get(mappingPath).getName();
+    }
+
+    private void loadResources(String xmlLocation) {
         //创建一个DocumentBuilderFactory的对象
         //创建一个DocumentBuilderFactory的对象
         DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
         DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
         //创建DocumentBuilder对象
         //创建DocumentBuilder对象
         DocumentBuilder db = null;
         DocumentBuilder db = null;
         try {
         try {
             db = dbf.newDocumentBuilder();
             db = dbf.newDocumentBuilder();
-            //通过DocumentBuilder对象的parser方法加载xml文件
             Document document = db.parse(xmlLocation);
             Document document = db.parse(xmlLocation);
-            //获取所有book节点的集合
-            NodeList taglist = document.getElementsByTagName("servlet");
-            //通过taglist的getLength()方法可以获取taglist 的长度
-            System.out.println("一共有" + taglist.getLength() + "个");
-            //遍历每一个book节点
-            for (int i = 0; i < taglist.getLength(); i++) {
-                System.out.println("=================下面开始遍历第" + (i + 1) + "本书的内容=================");
-                //通过 item(i)方法 获取一个book节点，nodelist的索引值从0开始
-                Node servlet = taglist.item(i);
-                //获取book节点的所有属性集合
-                NamedNodeMap attrs = servlet.getAttributes();
-                System.out.println("第 " + (i + 1) + "本书共有" + attrs.getLength() + "个属性");
-                //遍历book的属性
-                for (int j = 0; j < attrs.getLength(); j++) {
-                    //通过item(index)方法获取book节点的某一个属性
-                    Node attr = attrs.item(j);
-                    //获取属性名
-                    System.out.print("属性名：" + attr.getNodeName());
-                    //获取属性值
-                    System.out.println("--属性值" + attr.getNodeValue());
-                }
-                //解析book节点的子节点
-                NodeList childNodes = servlet.getChildNodes();
-                //遍历childNodes获取每个节点的节点名和节点值
-                System.out.println("第" + (i + 1) + "本书共有" +
-                        childNodes.getLength() + "个子节点");
-                for (int k = 0; k < childNodes.getLength(); k++) {
-                    //区分出text类型的node以及element类型的node
-                    if (childNodes.item(k).getNodeType() == Node.ELEMENT_NODE) {
-                        //获取了element类型节点的节点名
-                        System.out.print("第" + (k + 1) + "个节点的节点名："
-                                + childNodes.item(k).getNodeName());
-                        //获取了element类型节点的节点值
-                        System.out.println("--节点值是：" + childNodes.item(k).getFirstChild().getNodeValue());
-                        //System.out.println("--节点值是：" + childNodes.item(k).getTextContent());
-                    }
+            //获取某一根节点下的所有标签
+
+            NodeList servletList = document.getElementsByTagName("servlet");
+            Map<String,Class> nameMapClass = new HashMap<>();
+            for (int i = 0 ; i < servletList.getLength() ; i ++){
+                Element node = (Element) servletList.item(i);
+                String nameValue = node.getElementsByTagName("servlet-name")
+                        .item(0)
+                        .getFirstChild()
+                        .getNodeValue();
+                String classValue = node.getElementsByTagName("servlet-class")
+                        .item(0)
+                        .getFirstChild()
+                        .getNodeValue();
+                Class clazz = Class.forName(classValue);
+                nameMapClass.put(nameValue,clazz);
             }
             }
-                System.out.println("======================结束遍历第" + (i + 1) + "本书的内容=================");
+
+            NodeList servletMappingList = document.getElementsByTagName("servlet-mapping");
+            for (int i = 0 ; i < servletMappingList.getLength() ; i++){
+                Element node = (Element) servletMappingList.item(i);
+                String nameValue = node.getElementsByTagName("servlet-name")
+                        .item(0)
+                        .getFirstChild()
+                        .getNodeValue();
+
+                String urlValue = node.getElementsByTagName("url-pattern")
+                        .item(0)
+                        .getFirstChild()
+                        .getNodeValue();
+                mapping.put(urlValue,new NameToClassMapping(nameValue,nameMapClass.get(nameValue)));
             }
             }
-        } catch (ParserConfigurationException e) {
-            e.printStackTrace();
-        } catch (IOException e) {
+        } catch (ParserConfigurationException | IOException | SAXException e) {
             e.printStackTrace();
             e.printStackTrace();
-        } catch (SAXException e) {
+        } catch (ClassNotFoundException e) {
             e.printStackTrace();
             e.printStackTrace();
         }
         }
     }
     }
 
 
-    public void loadResources () {
-        loadResources(default_xml_path);
+    private void loadResources () {
+        loadResources(XML_PATH_DEFAULT);
     }
     }
 
 
 
 
+
+
 }
 }

base/src/main/java/com/wang/servlet/core/HandlerMappingFactory.java

+package com.wang.servlet.core;
+
+/**
+ * @author: Jeffrey
+ * @date: 2022/01/23/22:23
+ * @description:
+ */
+public class HandlerMappingFactory {
+
+    private static HandlerMapping handlerMapping = new HandlerMapping();
+
+    /**
+     * @return 默认配置的xml
+     */
+    public static HandlerMapping getHandlerMapping(){
+        return handlerMapping;
+    }
+
+}

base/src/main/java/com/wang/servlet/core/NameToClassMapping.java

+package com.wang.servlet.core;
+
+import com.wang.servlet.http.HttpServlet;
+import lombok.AllArgsConstructor;
+import lombok.Data;
+
+/**
+ * @author: Jeffrey
+ * @date: 2022/01/23/22:40
+ * @description:
+ */
+@AllArgsConstructor
+@Data
+public class NameToClassMapping {
+
+    private String name;
+
+    private Class<HttpServlet> aClass;
+
+
+}

base/src/main/resources/log4j2.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<configuration status="OFF">
+<!--输出目的地配置-->
+    <appenders>
+        <Console name="Console" target="SYSTEM_OUT">
+<!-- %d{格式 yyyy-MM-dd HH:mm:ss,SSS} 时间
+     %c 全限定类名
+     %highlight{%d-5level} 输出打印优先级{颜色类型}
+     %style{[%t]} 对线程名添加风格{bright,magenta}
+     %L 行数
+     %M 调用logger 的方法名
+       -->
+            <PatternLayout pattern="%d{HH:mm:ss} %highlight{%-5level}{ERROR=Bright RED, WARN=Bright Yellow, INFO=Bright Green, DEBUG=Bright Cyan, TRACE=Bright White} %style{[%t]}{bright,magenta} %style{%c{1.}.%M(%L)}{cyan}->>> %msg%n"/>
+        </Console>
+    </appenders>
+    <loggers>
+        <root level="DEBUG">
+            <appender-ref ref="Console"/>
+        </root>
+    </loggers>
+
+</configuration>
\ No newline at end of file

base/target/classes/log4j2.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<configuration status="OFF">
+<!--输出目的地配置-->
+    <appenders>
+        <Console name="Console" target="SYSTEM_OUT">
+<!-- %d{格式 yyyy-MM-dd HH:mm:ss,SSS} 时间
+     %c 全限定类名
+     %highlight{%d-5level} 输出打印优先级{颜色类型}
+     %style{[%t]} 对线程名添加风格{bright,magenta}
+     %L 行数
+     %M 调用logger 的方法名
+       -->
+            <PatternLayout pattern="%d{HH:mm:ss} %highlight{%-5level}{ERROR=Bright RED, WARN=Bright Yellow, INFO=Bright Green, DEBUG=Bright Cyan, TRACE=Bright White} %style{[%t]}{bright,magenta} %style{%c{1.}.%M(%L)}{cyan}->>> %msg%n"/>
+        </Console>
+    </appenders>
+    <loggers>
+        <root level="DEBUG">
+            <appender-ref ref="Console"/>
+        </root>
+    </loggers>
+
+</configuration>
\ No newline at end of file