java乱码

            dbhelper boringdb = new dbhelper();            boringdb.connSQL();            String insert = "insert into boring(prflurl,name,post,school,reside) values('地址地址f','csdn','好无聊啊','家里蹲大学','北京')";             if (boringdb.insertSQL(insert) == true) {                  System.out.println("insert successfully");              }    

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