在linux下转UTF-8到GB18030，结果老为空，都试了几天了，结果都不正确，谁能救救我啊，以下是我的源代码：
EncodeMessage：该参数类型为jsring，EncodeMessage="ab你好吗"（从java传过来的）
char *temp;//="";
int len,reqBuffLen;
size_t length,length2=100,length3=100;
const jchar *jwstr;

//temp=(char*)env->GetStringChars(EncodeMessage,0);//返回的应当是utf-8，即Unicode
//reqBuffLen=env->GetStringLength(EncodeMessage);
temp=(char*)env->GetStringUTFChars(EncodeMessage,0);//返回的应当是UTF-8
reqBuffLen=env->GetStringUTFLength(EncodeMessage);
length = reqBuffLen;

printf("temp=%sn",temp);//正确显示
printf("reqBuffLen=%dn",reqBuffLen);
char *pmbbuf=(char*)malloc(length);
iconv_t cd;
//       cd=iconv_open("GB18030","utf-8");
cd=iconv_open("GB18030","UTF-8");//成功
if (cd==0){
  printf("iconv_open failsn");
  return -1;
}

size_t rt;
if(rt=(int)iconv(cd,&temp,&length,&pmbbuf,&length2)==-1){//成功
printf("iconv failsen");
return -1;
}
iconv_close(cd);
printf("pmbbuf=%sn",pmbbuf);//pmbbuf结果不是空，就是乱七八糟的东西
printf("len=%dn",length2);

结果不兑，那位大侠给看看啊，急死我了

try to set konsole encoding .

go home , byebye, ha ha