error handle to all: EncoderException

src/main/java/component/SignatureInfo.java

@@ -100,27 +100,27 @@ public class SignatureInfo implements TlvComponentBase, IEncodingAble {
      * @return
      */
     @Override
-    public int wireEncode(Encoder encoder) {
+    public int wireEncode(Encoder encoder) throws EncoderException {
         int totalLength=0;
         // 编码 TLV-VALUE
         if(!this.keyLocator.isValid()){
             // KeyLocator 是可选的，如果当前 SignatureInfo 对象有一个有效的 KeyLocator，则对其进行编码
             int tmplen=this.keyLocator.wireEncode(encoder);
             if(tmplen<=0){
-                return 0;
+                return -1;
             }
             totalLength+=tmplen;
         }
         int tmplen=this.signatureType.wireEncode(encoder);
         if(tmplen<=0){
-            return 0;
+            return -1;
         }
         totalLength+=tmplen;
 
         // 编码 TLV-LENGTH
         tmplen=encoder.prependVarNumber(new VlInt(totalLength));
         if(tmplen<=0){
-            return 0;
+            return -1;
         }
         totalLength+=tmplen;