com.gjing.utils

类 Gj

java.lang.Object

com.gjing.utils.Gj

public final class Gj
extends Object

作者:

Archine param util

构造器概要

构造器

构造器和说明
Gj()

方法概要

限定符和类型	方法和说明
static boolean	contains(String[] t, String u) Determines whether an array contains other arrays
static Calendar	dateToCalendar(String str) text for time change to date
static void	excelExport(javax.servlet.http.HttpServletResponse response, List<Object[]> list, String[] headers, String title, String info) Excel export
static Date	getDate(String date) get java for time
static Date	getDate(String date, String format) get custom format java for time
static String	getDateAsString(Date date) get text for time
static String	getDateAsString(Date date, String format) get custom format text for time
static String	md5(String body) MD5 encryption
static <T> boolean	multiParamHasEmpty(List<T> params) Check multiple parameters for null
static boolean	paramIsEmpty(Object str) Checks if a single parameter is null
static boolean	paramIsNotEmpty(Object str) Check multiple parameters for not null
static String	removeEndSymbol(String str, String symbol) remove the end symbol that parameter
static String	removeStartSymbol(String str, String symbol) remove the start symbol that parameter
static String	removeSymbol(String str, String symbol) remove the symbol that parameter
static String	sha256Hmac(String str, String secret) sha256 Hmac加密
static String[]	split(String str, String symbol) separated by symbols
static String	toLowerCase(String str) change to lower case
static String	toUpperCase(String str) change to upper case
static List<String>	trim(List<String> list) remove null values for the list
static String	trim(String str) remove null value for the param
static String	urlAppend(String url, Map<String,Object> map) url append , example: http://ip:port?
static String	urlAppend(String url, org.springframework.util.MultiValueMap<String,String> map) url拼接

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

Gj

public Gj()

方法详细资料

paramIsEmpty

public static boolean paramIsEmpty(Object str)

Checks if a single parameter is null

参数:

str - parameter

返回:

True is empty, false is not

multiParamHasEmpty

public static <T> boolean multiParamHasEmpty(List<T> params)

Check multiple parameters for null

类型参数:

T - parameter type

参数:

params - multiple parameter

返回:

True is contain, false is not

paramIsNotEmpty

public static boolean paramIsNotEmpty(Object str)

Check multiple parameters for not null

参数:

str - parameter

返回:

True is not, false is empty

trim

public static String trim(String str)

remove null value for the param

参数:

str - param

返回:

NonNull param

trim

public static List<String> trim(List<String> list)

remove null values for the list

参数:

list - A list of null values that need to be removed

返回:

NonNull List

toUpperCase

public static String toUpperCase(@NonNull
                                 String str)

change to upper case

参数:

str - parameter that need to change to upper case

返回:

changed param

toLowerCase

public static String toLowerCase(@NonNull
                                 String str)

change to lower case

参数:

str - parameter that need to change to lower case

返回:

changed param

removeSymbol

public static String removeSymbol(String str,
                                  @Nullable
                                  String symbol)

remove the symbol that parameter

参数:

str - parameter

symbol - symbol

返回:

has been removed

removeStartSymbol

public static String removeStartSymbol(String str,
                                       String symbol)

remove the start symbol that parameter

参数:

str - parameter

symbol - symbol

返回:

has been removed

removeEndSymbol

public static String removeEndSymbol(String str,
                                     String symbol)

remove the end symbol that parameter

参数:

str - parameter

symbol - symbol

返回:

has been removed

split

public static String[] split(String str,
                             String symbol)

separated by symbols

参数:

str - need to separated parameter

symbol - symbol

返回:

has been separated warning: The length of the symbol can only be one

md5

public static String md5(@NonNull
                         String body)

MD5 encryption

参数:

body - need to encryption

返回:

encrypted string

sha256Hmac

public static String sha256Hmac(String str,
                                String secret)

sha256 Hmac加密

参数:

str - 需要加密的消息

secret - 秘钥

返回:

加密后的字符串

excelExport

public static void excelExport(javax.servlet.http.HttpServletResponse response,
                               List<Object[]> list,
                               String[] headers,
                               String title,
                               @Nullable
                               String info)

Excel export

参数:

response - response

list - Data that needs to be exported

headers - excel headers

title - Excel file name

info - Excel introduction, Pass null or "" if you don't need it

contains

public static boolean contains(String[] t,
                               String u)

Determines whether an array contains other arrays

参数:

t - target array

u - param

返回:

true is contains

getDateAsString

public static String getDateAsString(Date date)

get text for time

参数:

date - date

返回:

string

getDateAsString

public static String getDateAsString(Date date,
                                     String format)

get custom format text for time

参数:

date - date

format - format

返回:

string

getDate

public static Date getDate(String date)
                    throws ParseException

get java for time

参数:

date - text for time

返回:

java date

抛出:

ParseException - format exception

getDate

public static Date getDate(String date,
                           String format)
                    throws ParseException

get custom format java for time

参数:

date - date

format - format

返回:

java for time

抛出:

ParseException - format ex

dateToCalendar

public static Calendar dateToCalendar(String str)
                               throws ParseException

text for time change to date

参数:

str - text for time

返回:

date

抛出:

ParseException - format EX

urlAppend

public static String urlAppend(String url,
                               org.springframework.util.MultiValueMap<String,String> map)

url拼接

参数:

map - 参数

url - 需要拼接的url

返回:

拼接完后的url

urlAppend

public static String urlAppend(String url,
                               Map<String,Object> map)

url append , example: http://ip:port?param1={param1}

参数:

map - param

url - url

返回:

appended url