Java内容重新整理删除过期的东西

Java/JavaDemo/codedemo/proxy/AccountService.java

@@ -0,0 +1,27 @@
+package cn.aofeng.demo.proxy;
+
+/**
+ * 账号服务接口定义。
+ * 
+ * @author <a href="mailto:aofengblog@163.com">聂勇</a>
+ */
+public interface AccountService {
+
+    /**
+     * 注册。
+     * 
+     * @param username 账号名
+     * @return 具体含义查看{@link Result}的说明。
+     */
+    Result register(String username);
+    
+    /**
+     * 登录。
+     * 
+     * @param username 账号名
+     * @param password 密码
+     * @return 具体含义查看{@link Result}的说明。
+     */
+    Result login(String username, String password);
+
+}

Java/JavaDemo/codedemo/proxy/AccountServiceClient.java

@@ -0,0 +1,28 @@
+package cn.aofeng.demo.proxy;
+
+/**
+ * 代理调用示例。
+ * 
+ * @author <a href="mailto:aofengblog@163.com">聂勇</a>
+ */
+public class AccountServiceClient {
+
+    public static void main(String[] args) {
+        AccountService as = new AccountServiceImpl();
+        
+        // 静态代理
+        AccountService staticProxy = new AccountServiceStaticProxy(as);
+        staticProxy.register(null);
+        staticProxy.register("A0001");
+        staticProxy.login(null, null);
+        staticProxy.login("A0001", "PWD0001");
+        
+        // 动态代理
+        AccountService dynamicProxy = AccountServiceDynamicProxy.newInstance(as);
+        dynamicProxy.register(null);
+        dynamicProxy.register("A0001");
+        dynamicProxy.login(null, null);
+        dynamicProxy.login("A0001", "PWD0001");
+    }
+
+}

Java/JavaDemo/codedemo/proxy/AccountServiceDynamicProxy.java

@@ -0,0 +1,42 @@
+package cn.aofeng.demo.proxy;
+
+import java.lang.reflect.InvocationHandler;
+import java.lang.reflect.Method;
+import java.lang.reflect.Proxy;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * 账号服务动态代理。
+ * 
+ * @author <a href="mailto:aofengblog@163.com">聂勇</a>
+ */
+public class AccountServiceDynamicProxy implements InvocationHandler {
+
+    private final static Logger _LOGGER = LoggerFactory.getLogger(AccountServiceDynamicProxy.class);
+    
+    private AccountService _accountService;
+    
+    public AccountServiceDynamicProxy(AccountService accountService) {
+        this._accountService = accountService;
+    }
+    
+    @Override
+    public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
+        _LOGGER.debug("execute method {}, arguments: {}", method.getName(), args);
+        Object result = method.invoke(_accountService, args);
+        _LOGGER.debug("execute method {}, result:{}", method.getName(), result);
+        
+        return result;
+    }
+    
+    public static AccountService newInstance(AccountService accountService) {
+        ClassLoader loader = accountService.getClass().getClassLoader();
+        Class<?>[] interfaces = accountService.getClass().getInterfaces();
+        
+        return (AccountService) Proxy.newProxyInstance(loader, 
+                interfaces, 
+                new AccountServiceDynamicProxy(accountService));
+    }
+}

Java/JavaDemo/codedemo/proxy/AccountServiceImpl.java

@@ -0,0 +1,53 @@
+package cn.aofeng.demo.proxy;
+
+import java.util.Random;
+
+import wiremock.org.apache.commons.lang.StringUtils;
+
+/**
+ * 
+ * 
+ * @author <a href="mailto:aofengblog@163.com">聂勇</a>
+ */
+public class AccountServiceImpl implements AccountService {
+
+    private final static Random NUM = new Random(System.currentTimeMillis());
+    
+    @Override
+    public Result register(String username) {
+        if (StringUtils.isBlank(username)) {
+            return createResult(4000001, "注册失败");
+        }
+        
+        User user = new User();
+        user.setUid(NUM.nextInt());
+        user.setNickname("用户"+user.getUid());
+        return createResult(2000001, "注册成功", user);
+    }
+
+    @Override
+    public Result login(String username, String password) {
+        if (StringUtils.isBlank(username) || StringUtils.isBlank(password)) {
+            return createResult(4000001, "登录失败");
+        }
+        
+        User user = new User();
+        user.setUid(NUM.nextInt());
+        user.setNickname("用户"+user.getUid());
+        return createResult(2000001, "登录成功", user);
+    }
+
+    private Result createResult(int code, String msg) {
+        Result result = new Result(code, msg);
+                
+        return result;
+    }
+
+    private Result createResult(int code, String msg, User user) {
+        Result result = new Result(code, msg);
+        result.setData(user);
+                
+        return result;
+    }
+
+}

Java/JavaDemo/codedemo/proxy/AccountServiceStaticProxy.java

@@ -0,0 +1,39 @@
+package cn.aofeng.demo.proxy;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * {@link AccountServiceImpl}的代理类，增加了输出入参和响应的日志。
+ * 
+ * @author <a href="mailto:aofengblog@163.com">聂勇</a>
+ */
+public class AccountServiceStaticProxy implements AccountService {
+
+    private AccountService _delegate;
+    
+    private final static Logger _LOGGER = LoggerFactory.getLogger(AccountServiceStaticProxy.class);
+    
+    public AccountServiceStaticProxy(AccountService accountService) {
+        this._delegate = accountService;
+    }
+    
+    @Override
+    public Result register(String username) {
+        _LOGGER.debug("execute method register, arguments: username={}", username);
+        Result result = _delegate.register(username);
+        _LOGGER.debug("execute method register, result:{}", result);
+        
+        return result;
+    }
+
+    @Override
+    public Result login(String username, String password) {
+        _LOGGER.debug("execute method login, arguments: username={}, password={}", username, password);
+        Result result = _delegate.login(username, password);      
+        _LOGGER.debug("execute method login, result:{}", result);
+        
+        return result;
+    }
+
+}

Java/JavaDemo/codedemo/proxy/Result.java

@@ -0,0 +1,65 @@
+package cn.aofeng.demo.proxy;
+
+/**
+ * 账号服务操作结果。
+ * 
+ * @author <a href="mailto:aofengblog@163.com">聂勇</a>
+ */
+public class Result {
+
+    /**
+     * 200xxxx 表示成功。<br/>
+     * 400xxxx 表示参数错误。<br/>
+     * 500xxxx 表示服务内部错误。
+     */
+    private int code;
+    
+    /**
+     * code对应的描述信息。
+     */
+    private String msg;
+    
+    /**
+     * 只有code为200xxxx时才有值，其他情况下为null。
+     */
+    private User data;
+
+    public Result() {
+        // nothing
+    }
+    
+    public Result(int code, String msg) {
+        this.code = code;
+        this.msg = msg;
+    }
+    
+    public int getCode() {
+        return code;
+    }
+
+    public void setCode(int code) {
+        this.code = code;
+    }
+
+    public String getMsg() {
+        return msg;
+    }
+
+    public void setMsg(String msg) {
+        this.msg = msg;
+    }
+
+    public User getData() {
+        return data;
+    }
+
+    public void setData(User data) {
+        this.data = data;
+    }
+
+    @Override
+    public String toString() {
+        return "Result [code=" + code + ", msg=" + msg + ", data=" + data + "]";
+    }
+
+}

Java/JavaDemo/codedemo/proxy/User.java

@@ -0,0 +1,38 @@
+/**
+ * 
+ */
+package cn.aofeng.demo.proxy;
+
+/**
+ * 用户信息。
+ * 
+ * @author <a href="mailto:aofengblog@163.com">聂勇</a>
+ */
+public class User {
+
+    private long uid;
+    
+    private String nickname;
+
+    public long getUid() {
+        return uid;
+    }
+
+    public void setUid(long uid) {
+        this.uid = uid;
+    }
+
+    public String getNickname() {
+        return nickname;
+    }
+
+    public void setNickname(String nickname) {
+        this.nickname = nickname;
+    }
+
+    @Override
+    public String toString() {
+        return "User [uid=" + uid + ", nickname=" + nickname + "]";
+    }
+
+}