add error handle: ComponentException & PacketException

src/main/java/component/CanBePrefix.java

@@ -43,7 +43,7 @@ public class CanBePrefix implements TlvComponentBase,InitialAble, IEncodingAble
      * @return
      */
     @Override
-    public int wireEncode(Encoder encoder) throws EncoderException {
+    public int wireEncode(Encoder encoder) throws ComponentException {
         // 这是一个存在性组件，所以如果值为false，则无需编码
         if(!this.canBePrefix){
             return -1;
@@ -52,14 +52,23 @@ public class CanBePrefix implements TlvComponentBase,InitialAble, IEncodingAble
         int totalLength=0;
 
         // 编码 TLV-LENGTH
-        int tmplen=encoder.prependVarNumber(new VlInt(totalLength));
+        int tmplen= 0;
+        try {
+            tmplen = encoder.prependVarNumber(new VlInt(totalLength));
+        } catch (EncoderException e) {
+            throw new ComponentException("CanBePrefix.wireEncode: "+e.getMessage());
+        }
         if(tmplen<=0){
             return -1;
         }
         totalLength+=tmplen;
 
         // 编码 TLV-TYPE
-        tmplen=encoder.prependVarNumber(new VlInt(TLV.TlvCanBePrefix));
+        try {
+            tmplen=encoder.prependVarNumber(new VlInt(TLV.TlvCanBePrefix));
+        } catch (EncoderException e) {
+            throw new ComponentException("CanBePrefix.wireEncode: "+e.getMessage());
+        }
         if(tmplen<=0){
             return -1;
         }