想让list数组返回前端后可以被JSON.parse解析于是导入fastjson.jar包，结果返回前端报错，求解

Question

想让list数组返回前端后可以被JSON.parse解析于是导入fastjson.jar包，结果返回前端报错，求解,

解析后的str报Cannot resolve symbol 'str'错误，看网上的教程说File->Invalidate Caches/Restart 清除缓存重启 ，尝试了还是报错

List<String[]> list = new ArrayList<String[]>();
if(1=1){
for (int i = 0; i < table.getNumRows(); i++) {
                        table.setRow(i);
                        ZMBLNR = table.getString("ZMBLNR"); //
                        VBELN = table.getString("VBELN"); //
                        NUMBER = table.getString("NUMBER");
                        MATNR = table.getString("MATNR");  
                        MAKTX = table.getString("MAKTX"); 
                        KUNNR = table.getString("KUNNR"); 
                        NAME1 = table.getString("NAME1"); 
                        LFIMG = table.getString("LFIMG"); 
                        ZFIMG = table.getString("ZFIMG"); 
                        MBLNR = table.getString("MBLNR"); 
                        ZCNAME = table.getString("ZCNAME"); 
                        ZSDATS_TIMS = table.getString("ZSDATS_TIMS"); 
                        VTWEG = table.getString("VTWEG"); 
                        
                        list.add(new String[]{ZMBLNR,VBELN,NUMBER,MATNR,MAKTX,KUNNR,NAME1,LFIMG,ZFIMG,MBLNR,ZCNAME,ZSDATS_TIMS,VTWEG });

                        String str=JSON.toJSON(list).toString();
}}
out.print(" { \"result\": \"" + result + "\", \"msg\" : \"" + msg + "\" , \"list\" : \"" + str + "\", \"flag\" : \"" + flag
                        + "\"  } ");

Answer 1

String str=JSON.toJSON(list).toString();

你这一步得到的json字符串那个是正确吗？你可以打印看看