2.3.9 异常处理：泛化的捕获异常

license/src/main/java/iot/sixiang/license/device/DeviceDecoder.java

@@ -22,7 +22,6 @@ public class DeviceDecoder extends ByteToMessageDecoder {
         buffer.readBytes(packet);
         buffer.resetReaderIndex();
         Util.DEBUG_HEX("SERVER -> IN", packet, packet.length);
-        try {
         if (buffer.readableBytes() < BASE_LENGTH) {
             return;
         }
@@ -49,11 +48,6 @@ public class DeviceDecoder extends ByteToMessageDecoder {
 
         DeviceProtocol protocol = new DeviceProtocol(stx, len, cmd, ack, content, end);
         out.add(protocol);
-
-        } catch (Exception e) {
-            // TODO Auto-generated catch block
-            log.error("DeviceDecoder error!");
-        }
     }
 
 }
\ No newline at end of file

license/src/main/java/iot/sixiang/license/device/DeviceEncoder.java

@@ -14,7 +14,6 @@ public class DeviceEncoder extends MessageToByteEncoder<DeviceProtocol> {
 
     @Override
     protected void encode(ChannelHandlerContext tcx, DeviceProtocol msg, ByteBuf out) {
-        try {
 
         out.writeShort(msg.getStx());
         out.writeShortLE(msg.getLen());
@@ -26,9 +25,5 @@ public class DeviceEncoder extends MessageToByteEncoder<DeviceProtocol> {
             out.writeBytes(msg.getContent());
         }
         out.writeByte(msg.getEnd());
-        } catch (Exception e) {
-            // TODO Auto-generated catch block
-            log.error("解码器异常");
-        }
     }
 }

license/src/main/java/iot/sixiang/license/forward/ForwardDecoder.java

@@ -17,7 +17,6 @@ public class ForwardDecoder extends ByteToMessageDecoder {
     @Override
     protected void decode(ChannelHandlerContext ctx, ByteBuf buffer, List<Object> out) {
         // 可读长度必须大于等于基本长度
-        try {
         byte[] packet = new byte[buffer.readableBytes()];
         buffer.readBytes(packet);
         buffer.resetReaderIndex();
@@ -55,11 +54,6 @@ public class ForwardDecoder extends ByteToMessageDecoder {
 
         DeviceProtocol protocol = new DeviceProtocol(stx, real_len, cmd, ack, content, end);
         out.add(protocol);
-
-        } catch (Exception e) {
-            // TODO Auto-generated catch block
-            log.error("Decoder error");
-        }
     }
 
 

license/src/main/java/iot/sixiang/license/forward/ForwardEncoder.java

@@ -11,7 +11,6 @@ public class ForwardEncoder extends MessageToByteEncoder<DeviceProtocol> {
 
     @Override
     protected void encode(ChannelHandlerContext tcx, DeviceProtocol msg, ByteBuf out) {
-        try {
 
         out.writeShort(msg.getStx());
         out.writeShortLE(msg.getLen());
@@ -22,9 +21,5 @@ public class ForwardEncoder extends MessageToByteEncoder<DeviceProtocol> {
             out.writeBytes(msg.getContent());
         }
         out.writeByte(msg.getEnd());
-        } catch (Exception e) {
-            // TODO Auto-generated catch block
-            log.error("解码器异常");
-        }
     }
 }

license/src/main/java/iot/sixiang/license/jwt/JwtUtil.java

@@ -22,22 +22,23 @@ public class JwtUtil {
      **/
     private static final long EXPIRATION = 3600L;//单位为秒
 
-    private static HashMap<String,String> tokens = new HashMap<>();
+    private static HashMap<String, String> tokens = new HashMap<>();
+
     /**
      * 生成用户token,设置token超时时间
      */
-    public  static String createToken(LoginUser user){
+    public static String createToken(LoginUser user) {
         //过期时间
         Date expireDate = new Date(System.currentTimeMillis() + EXPIRATION * 1000);
         Map<String, Object> map = new HashMap<>();
         map.put("alg", "HS256");
         map.put("typ", "JWT");
-        String token= JWT.create()
+        String token = JWT.create()
                 .withHeader(map)                //添加头部
                 //可以把数据存在claim中
-                .withClaim("userId",user.getUserId())
-                .withClaim("userName",user.getUserName())
-                .withClaim("password",user.getPassword())
+                .withClaim("userId", user.getUserId())
+                .withClaim("userName", user.getUserName())
+                .withClaim("password", user.getPassword())
                 .withExpiresAt(expireDate)          //超时设置,设置过期的日期
                 .withIssuedAt(new Date()) //签发时间
                 .sign(Algorithm.HMAC256(SECRET)); //SECRET加密
@@ -63,16 +64,9 @@ public class JwtUtil {
     /**
      * 检验token并解析token
      */
-    public static DecodedJWT verifyToken(String token){
-        DecodedJWT jwt=null;
-        try {
-            JWTVerifier verifier=JWT.require(Algorithm.HMAC256(SECRET)).build();
-            jwt=verifier.verify(token);
-        }catch (Exception e){
-            log.error(e.getMessage());
-            log.error("解析编码异常");
-        }
-
+    public static DecodedJWT verifyToken(String token) {
+        JWTVerifier verifier = JWT.require(Algorithm.HMAC256(SECRET)).build();
+        DecodedJWT jwt = verifier.verify(token);
         return jwt;
     }
 }

license/src/main/java/iot/sixiang/license/log/LogAspect.java

@@ -57,7 +57,7 @@ public class LogAspect {
     }
 
     protected void handleLog(final JoinPoint joinPoint, final Exception e, Object jsonResult) {
-        try {
+
         // 获得注解
         MyLog controllerLog = getAnnotationLog(joinPoint);
         if (controllerLog == null) {
@@ -79,10 +79,6 @@ public class LogAspect {
         getControllerMethodDescription(joinPoint, controllerLog, operLog);
         // 保存数据库
         sysOperLogService.addOperlog(operLog.getTitle(), operLog.getBusinessType(), operLog.getUri(), operLog.getStatus(), operLog.getOptParam(), operLog.getErrorMsg(), operLog.getOperTime());
-        } catch (Exception exp) {
-            log.error("==前置通知异常==");
-            log.error("日志异常信息 {}", exp);
-        }
     }
 
     /**

license/src/main/java/iot/sixiang/license/operate/OperateDecoder.java

@@ -16,8 +16,6 @@ public class OperateDecoder extends ByteToMessageDecoder {
     @Override
     protected void decode(ChannelHandlerContext ctx, ByteBuf buffer, List<Object> out) {
         // 可读长度必须大于等于基本长度
-        try {
-
         if (buffer.readableBytes() < BASE_LENGTH) {
             return;
         }
@@ -49,11 +47,6 @@ public class OperateDecoder extends ByteToMessageDecoder {
 
         DeviceProtocol protocol = new DeviceProtocol(stx, real_len, cmd, ack, content, end);
         out.add(protocol);
-
-        } catch (Exception e) {
-            // TODO Auto-generated catch block
-            log.error("Decoder error");
-        }
     }
 
 

license/src/main/java/iot/sixiang/license/operate/OperateEncoder.java

@@ -4,7 +4,6 @@ import io.netty.buffer.ByteBuf;
 import io.netty.channel.ChannelHandlerContext;
 import io.netty.handler.codec.MessageToByteEncoder;
 import iot.sixiang.license.device.DeviceProtocol;
-import iot.sixiang.license.util.Util;
 import lombok.extern.slf4j.Slf4j;
 
 @Slf4j
@@ -12,7 +11,6 @@ public class OperateEncoder extends MessageToByteEncoder<DeviceProtocol> {
 
     @Override
     protected void encode(ChannelHandlerContext tcx, DeviceProtocol msg, ByteBuf out) {
-        try {
 
         out.writeShort(msg.getStx());
         out.writeShortLE(msg.getLen());
@@ -23,9 +21,5 @@ public class OperateEncoder extends MessageToByteEncoder<DeviceProtocol> {
             out.writeBytes(msg.getContent());
         }
         out.writeByte(msg.getEnd());
-        } catch (Exception e) {
-            // TODO Auto-generated catch block
-            log.error("解码器异常");
-        }
     }
 }

license/src/main/java/iot/sixiang/license/util/CommonUtil.java

@@ -2,13 +2,12 @@ package iot.sixiang.license.util;
 
 import lombok.extern.slf4j.Slf4j;
 
-import java.io.*;
+import java.io.UnsupportedEncodingException;
 import java.security.NoSuchAlgorithmException;
 import java.security.SecureRandom;
 import java.text.SimpleDateFormat;
-import java.util.*;
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
+import java.util.Date;
+import java.util.Locale;
 @Slf4j
 public class 	CommonUtil {