~jmeter解决csrftoken登录问题

//获取响应代码Unicode编码的
　　　　  String s2=new String(prev.getResponseData(),"UTF-8");
　　　　　char aChar;
        int len= s2.length();
        StringBuffer outBuffer=new StringBuffer(len);
        for(int x =0; x <len;){
            aChar= s2.charAt(x++);
            if(aChar==‘\\‘){
                aChar= s2.charAt(x++);
                if(aChar==‘u‘){
                    int value =0;
                    for(int i=0;i<4;i++){
                        aChar= s2.charAt(x++);
                        switch(aChar){
                            case‘0‘:
                            case‘1‘:
                            case‘2‘:
                            case‘3‘:
                            case‘4‘:
                            case‘5‘:
                            case‘6‘:
                            case‘7‘:
                            case‘8‘:
                            case‘9‘:
                                value=(value <<4)+aChar-‘0‘;
                                break;
                            case‘a‘:
                            case‘b‘:
                            case‘c‘:
                            case‘d‘:
                            case‘e‘:
                            case‘f‘:
                                value=(value <<4)+10+aChar-‘a‘;
                                break;
                            case‘A‘:
                            case‘B‘:
                            case‘C‘:
                            case‘D‘:
                            case‘E‘:
                            case‘F‘:
                                value=(value <<4)+10+aChar-‘A‘;
                                break;
                            default:
                                throw new IllegalArgumentException(
                                        "Malformed   \\uxxxx  encoding.");}}
                    outBuffer.append((char) value);}else{
                    if(aChar==‘t‘)
                        aChar=‘\t‘;
                    else if(aChar==‘r‘)
                    aChar=‘\r‘;
                    else if(aChar==‘n‘)
                    aChar=‘\n‘;
                    else if(aChar==‘f‘)
                    aChar=‘\f‘;
                    outBuffer.append(aChar);}}else
                outBuffer.append(aChar);}
//将转成中文的响应结果在查看结果树中显示
        prev.setResponseData(outBuffer.toString());