When the FileWriter.Write method writes a longer string, the actual output is different from the string.

when you use the FileWriter.write (String) method to write a longer string, the actual output is different from the string 

Writer is = new FileWriter(urlStr, false);
is.write(sqls);
is.flush();
is.close();

where sqls is: 

CREATE TABLE "SUNAOS"."CM_C10001_TB" 
   (
    "F_SSSAS" VARCHAR2(50) NOT NULL ENABLE,
    "F_QWE" VARCHAR2(50) NOT NULL ENABLE,
    "F_WBSJ" VARCHAR2(30) NOT NULL ENABLE,
    "IS_OPEN" CHAR(1) DEFAULT "1" NOT NULL ENABLE,
    "IS_LOCK" VARCHAR2(10) DEFAULT "",
    "LAST_MODI_DATE" CHAR(14) DEFAULT sysdate,
    "BANK_NO" VARCHAR2(50) DEFAULT "SUNYARD",
    "SYSTEM_NO" VARCHAR2(50) DEFAULT "AOS",
    "PROJECT_NO" VARCHAR2(50) DEFAULT "AOS",
    "CUSTOM_NO" VARCHAR2(20) NOT NULL ENABLE
) SEGMENT CREATION IMMEDIATE 
  PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255 NOCOMPRESS LOGGING
  STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
  TABLESPACE "SUNAOS_SM";
COMMENT ON TABLE CM_C10001_TB  IS "";
COMMENT ON COLUMN "SUNAOS"."CM_C10001_TB"."F_SSSAS"  IS "2";
COMMENT ON COLUMN "SUNAOS"."CM_C10001_TB"."F_QWE"  IS "qwe";
COMMENT ON COLUMN "SUNAOS"."CM_C10001_TB"."F_WBSJ"  IS "";
COMMENT ON COLUMN "SUNAOS"."CM_C10001_TB"."IS_OPEN"  IS "";
COMMENT ON COLUMN "SUNAOS"."CM_C10001_TB"."IS_LOCK"  IS "";
COMMENT ON COLUMN "SUNAOS"."CM_C10001_TB"."LAST_MODI_DATE"  IS "";
COMMENT ON COLUMN "SUNAOS"."CM_C10001_TB"."BANK_NO"  IS "";
COMMENT ON COLUMN "SUNAOS"."CM_C10001_TB"."SYSTEM_NO"  IS "";
COMMENT ON COLUMN "SUNAOS"."CM_C10001_TB"."PROJECT_NO"  IS "";
COMMENT ON COLUMN "SUNAOS"."CM_C10001_TB"."CUSTOM_NO"  IS "";
INSERT INTO "SUNAOS"."CM_C10001_TB" (F_QWE,BANK_NO,SYSTEM_NO,F_SSSAS,IS_OPEN,IS_LOCK,PROJECT_NO,CUSTOM_NO,LAST_MODI_DATE,F_WBSJ) VALUES ("123","SUNYARD","AOS","1231","1",null,"AOS","20180725133230012001","20180725133324","");
INSERT INTO "SUNAOS"."SM_ELEM_MODULE_TB" (MODULE_NO,DISPLAY_ORDER,DIALOG_CHANGELINE,IS_FORMAT,IS_QUERY,IS_LOCK,CONTROL_WIDTH,BANK_NO,DIALOG_CONTROLWIDTH,SYSTEM_NO,IS_REQUIRED,CHANGE_LINE,IS_OPEN,PROJECT_NO,LAST_MODI_DATE,IS_MODIFY,ELEM_NO) VALUES ("-sharpC10001","2","0","0","0",null,"0","SUNYARD","150","AOS","1","0","1","AOS","SYSDATE       ","1","20180724202236213001");
INSERT INTO "SUNAOS"."SM_ELEM_MODULE_TB" (MODULE_NO,DISPLAY_ORDER,DIALOG_CHANGELINE,IS_FORMAT,IS_QUERY,IS_LOCK,CONTROL_WIDTH,BANK_NO,DIALOG_CONTROLWIDTH,SYSTEM_NO,IS_REQUIRED,CHANGE_LINE,IS_OPEN,PROJECT_NO,LAST_MODI_DATE,IS_MODIFY,ELEM_NO) VALUES ("-sharpC10001","3","0","0","0",null,"0","SUNYARD","150","AOS","1","0","1","AOS","SYSDATE       ","0","20180718135855210001");
INSERT INTO "SUNAOS"."SM_ELEM_MODULE_TB" (MODULE_NO,DISPLAY_ORDER,DIALOG_CHANGELINE,IS_FORMAT,IS_QUERY,IS_LOCK,CONTROL_WIDTH,BANK_NO,DIALOG_CONTROLWIDTH,SYSTEM_NO,IS_REQUIRED,CHANGE_LINE,IS_OPEN,PROJECT_NO,LAST_MODI_DATE,IS_MODIFY,ELEM_NO) VALUES ("-sharpC10001","1","0","0","0",null,"0","SUNYARD","150","AOS","1","0","1","AOS","SYSDATE       ","0","20180720163410639001");
INSERT INTO "SUNAOS"."SM_ELEMENT_TB" (ELEM_CHINESE,IS_LOCK,ELEM_ENGLISH,BANK_NO,DATA_SOURCES,SHOW_TYPE,SYSTEM_NO,IS_OPEN,ELEM_DESC,ADD_WAY,PROJECT_NO,ELEM_LENGTH,SOURCES_TYPE,LAST_MODI_DATE,DATA_TYPE,ELEM_NO) VALUES ("2",null,"f_sssas","SUNYARD",null,"1","AOS","1","","0","AOS","50","1","SYSDATE       ","1","20180718135855210001");
INSERT INTO "SUNAOS"."SM_ELEMENT_TB" (ELEM_CHINESE,IS_LOCK,ELEM_ENGLISH,BANK_NO,DATA_SOURCES,SHOW_TYPE,SYSTEM_NO,IS_OPEN,ELEM_DESC,ADD_WAY,PROJECT_NO,ELEM_LENGTH,SOURCES_TYPE,LAST_MODI_DATE,DATA_TYPE,ELEM_NO) VALUES ("qwe",null,"f_qwe","SUNYARD",null,"1","AOS","1","qwe","0","AOS","50","1","SYSDATE       ","1","20180720163410639001");
INSERT INTO "SUNAOS"."SM_ELEMENT_TB" (ELEM_CHINESE,IS_LOCK,ELEM_ENGLISH,BANK_NO,DATA_SOURCES,SHOW_TYPE,SYSTEM_NO,IS_OPEN,ELEM_DESC,ADD_WAY,PROJECT_NO,ELEM_LENGTH,SOURCES_TYPE,LAST_MODI_DATE,DATA_TYPE,ELEM_NO) VALUES ("",null,"f_wbsj","SUNYARD","organ_name","3","AOS","1",null,"0","AOS","30","5","SYSDATE       ","1","20180724202236213001");

but the actual output has an extra string at the end: 

CREATE TABLE "SUNAOS"."CM_C10001_TB" 
   (
    "F_SSSAS" VARCHAR2(50) NOT NULL ENABLE,
    "F_QWE" VARCHAR2(50) NOT NULL ENABLE,
    "F_WBSJ" VARCHAR2(30) NOT NULL ENABLE,
    "IS_OPEN" CHAR(1) DEFAULT "1" NOT NULL ENABLE,
    "IS_LOCK" VARCHAR2(10) DEFAULT "",
    "LAST_MODI_DATE" CHAR(14) DEFAULT sysdate,
    "BANK_NO" VARCHAR2(50) DEFAULT "SUNYARD",
    "SYSTEM_NO" VARCHAR2(50) DEFAULT "AOS",
    "PROJECT_NO" VARCHAR2(50) DEFAULT "AOS",
    "CUSTOM_NO" VARCHAR2(20) NOT NULL ENABLE
) SEGMENT CREATION IMMEDIATE 
  PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255 NOCOMPRESS LOGGING
  STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
  TABLESPACE "SUNAOS_SM";
COMMENT ON TABLE CM_C10001_TB  IS "";
COMMENT ON COLUMN "SUNAOS"."CM_C10001_TB"."F_SSSAS"  IS "2";
COMMENT ON COLUMN "SUNAOS"."CM_C10001_TB"."F_QWE"  IS "qwe";
COMMENT ON COLUMN "SUNAOS"."CM_C10001_TB"."F_WBSJ"  IS "";
COMMENT ON COLUMN "SUNAOS"."CM_C10001_TB"."IS_OPEN"  IS "";
COMMENT ON COLUMN "SUNAOS"."CM_C10001_TB"."IS_LOCK"  IS "";
COMMENT ON COLUMN "SUNAOS"."CM_C10001_TB"."LAST_MODI_DATE"  IS "";
COMMENT ON COLUMN "SUNAOS"."CM_C10001_TB"."BANK_NO"  IS "";
COMMENT ON COLUMN "SUNAOS"."CM_C10001_TB"."SYSTEM_NO"  IS "";
COMMENT ON COLUMN "SUNAOS"."CM_C10001_TB"."PROJECT_NO"  IS "";
COMMENT ON COLUMN "SUNAOS"."CM_C10001_TB"."CUSTOM_NO"  IS "";
INSERT INTO "SUNAOS"."CM_C10001_TB" (F_QWE,BANK_NO,SYSTEM_NO,F_SSSAS,IS_OPEN,IS_LOCK,PROJECT_NO,CUSTOM_NO,LAST_MODI_DATE,F_WBSJ) VALUES ("123","SUNYARD","AOS","1231","1",null,"AOS","20180725133230012001","20180725133324","");
INSERT INTO "SUNAOS"."SM_ELEM_MODULE_TB" (MODULE_NO,DISPLAY_ORDER,DIALOG_CHANGELINE,IS_FORMAT,IS_QUERY,IS_LOCK,CONTROL_WIDTH,BANK_NO,DIALOG_CONTROLWIDTH,SYSTEM_NO,IS_REQUIRED,CHANGE_LINE,IS_OPEN,PROJECT_NO,LAST_MODI_DATE,IS_MODIFY,ELEM_NO) VALUES ("-sharpC10001","2","0","0","0",null,"0","SUNYARD","150","AOS","1","0","1","AOS","SYSDATE       ","1","20180724202236213001");
INSERT INTO "SUNAOS"."SM_ELEM_MODULE_TB" (MODULE_NO,DISPLAY_ORDER,DIALOG_CHANGELINE,IS_FORMAT,IS_QUERY,IS_LOCK,CONTROL_WIDTH,BANK_NO,DIALOG_CONTROLWIDTH,SYSTEM_NO,IS_REQUIRED,CHANGE_LINE,IS_OPEN,PROJECT_NO,LAST_MODI_DATE,IS_MODIFY,ELEM_NO) VALUES ("-sharpC10001","3","0","0","0",null,"0","SUNYARD","150","AOS","1","0","1","AOS","SYSDATE       ","0","20180718135855210001");
INSERT INTO "SUNAOS"."SM_ELEM_MODULE_TB" (MODULE_NO,DISPLAY_ORDER,DIALOG_CHANGELINE,IS_FORMAT,IS_QUERY,IS_LOCK,CONTROL_WIDTH,BANK_NO,DIALOG_CONTROLWIDTH,SYSTEM_NO,IS_REQUIRED,CHANGE_LINE,IS_OPEN,PROJECT_NO,LAST_MODI_DATE,IS_MODIFY,ELEM_NO) VALUES ("-sharpC10001","1","0","0","0",null,"0","SUNYARD","150","AOS","1","0","1","AOS","SYSDATE       ","0","20180720163410639001");
INSERT INTO "SUNAOS"."SM_ELEMENT_TB" (ELEM_CHINESE,IS_LOCK,ELEM_ENGLISH,BANK_NO,DATA_SOURCES,SHOW_TYPE,SYSTEM_NO,IS_OPEN,ELEM_DESC,ADD_WAY,PROJECT_NO,ELEM_LENGTH,SOURCES_TYPE,LAST_MODI_DATE,DATA_TYPE,ELEM_NO) VALUES ("2",null,"f_sssas","SUNYARD",null,"1","AOS","1","","0","AOS","50","1","SYSDATE       ","1","20180718135855210001");
INSERT INTO "SUNAOS"."SM_ELEMENT_TB" (ELEM_CHINESE,IS_LOCK,ELEM_ENGLISH,BANK_NO,DATA_SOURCES,SHOW_TYPE,SYSTEM_NO,IS_OPEN,ELEM_DESC,ADD_WAY,PROJECT_NO,ELEM_LENGTH,SOURCES_TYPE,LAST_MODI_DATE,DATA_TYPE,ELEM_NO) VALUES ("qwe",null,"f_qwe","SUNYARD",null,"1","AOS","1","qwe","0","AOS","50","1","SYSDATE       ","1","20180720163410639001");
INSERT INTO "SUNAOS"."SM_ELEMENT_TB" (ELEM_CHINESE,IS_LOCK,ELEM_ENGLISH,BANK_NO,DATA_SOURCES,SHOW_TYPE,SYSTEM_NO,IS_OPEN,ELEM_DESC,ADD_WAY,PROJECT_NO,ELEM_LENGTH,SOURCES_TYPE,LAST_MODI_DATE,DATA_TYPE,ELEM_NO) VALUES ("",null,"f_wbsj","SUNYARD","organ_name","3","AOS","1",null,"0","AOS","30","5","SYSDATE       ","1","20180724202236213001");
,IS_LOCK,CONTROL_WIDTH,BANK_NO,DIALOG_CONTROLWIDTH,SYSTEM_NO,IS_REQUIRED,CHANGE_LINE,IS_OPEN,PROJECT_NO,LAST_MODI_DATE,IS_MODIFY,ELEM_NO) VALUES ("-sharpC1000

the following string: 

,IS_LOCK,CONTROL_WIDTH,BANK_NO,DIALOG_CONTROLWIDTH,SYSTEM_NO,IS_REQUIRED,CHANGE_LINE,IS_OPEN,PROJECT_NO,LAST_MODI_DATE,IS_MODIFY,ELEM_NO) VALUES ("-sharpC1000

what is the reason

Java
Apr.03,2021

problem found. It's not the FileWriter problem, it's the time to generate the file and download it

. 
InputStream is = new FileInputStream(file);
OutputStream os = response.getOutputStream();
byte[] b = new byte[2048];
while ((is.read(b)) != -1) {
    os.write(b);
}

has bug

Previous: Mb_strpos, strpos, strstr and so on in php do not support Chinese, how to match Chinese?

Next: What is the difference between the js customization module export and the mixin of vue?

css mysql arrays josn react html typescript webpack npm sass R objective-c .net sql-server jquery python-3.x angularjs django angular excel regex iphone ajax linux xml pandas vba spring database wordpress string wpf xcode windows bash postgresql oracle multithreading eclipse list firebase algorithm macos forms image scala visual-studio azure bootstrap spring-boot react-native python-2.7 docker performance function winforms matlab powershell apache dataframe api sqlite numpy rest shell selenium flutter dart maven loops qt swing android-studio csv express file class tensorflow sorting codeigniter perl
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b43a93-2c6a2.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b43a93-2c6a2.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?