com.aliyun.teautil

类 Common

java.lang.Object

com.aliyun.teautil.Common

public class Common
extends Object

构造器概要

构造器

构造器和说明
Common()

方法概要

限定符和类型	方法和说明
static Map<String,Object>	assertAsMap(Object object) Assert a value, if it is a map, return it, otherwise throws
static Number	defaultNumber(Number number, Number defaultNumber) If not set the real, use default value
static String	defaultString(String str, String defaultStr) If not set the real, use default value
static boolean	empty(String str) Check the string is empty?
static boolean	equalNumber(Number num, Number val) Check one number equals another one?
static boolean	equalString(String str, String val) Check one string equals another one?
static String	getDateUTCString() Get an UTC format string by current date, e.g.
static String	getNonce() Generate a nonce string
static String	getUserAgent(String val)
static boolean	isUnset(Object object) Check one value is unset
static Object	parseJSON(String json) Parse it by JSON format
static byte[]	readAsBytes(InputStream stream) Read data from a readable stream, and compose it to a bytes
static Object	readAsJSON(InputStream stream) Read data from a readable stream, and parse it by JSON format
static String	readAsString(InputStream stream) Read data from a readable stream, and compose it to a string
static Map<String,String>	stringifyMapValue(Map<String,?> map) Stringify the value of map
static byte[]	toBytes(String str) Convert a string(utf8) to bytes
static String	toFormString(Map<String,?> map) Format a map to form string, like a=a%20b%20c
static String	toJSONString(Object object) If not set the real, use default value
static String	toString(byte[] bytes) Convert a bytes to string(utf8)

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

Common

public Common()

方法详细资料

toBytes

public static byte[] toBytes(String str)
                      throws UnsupportedEncodingException

Convert a string(utf8) to bytes

返回:

the return bytes

抛出:

UnsupportedEncodingException

toString

public static String toString(byte[] bytes)
                       throws UnsupportedEncodingException

Convert a bytes to string(utf8)

返回:

the return string

抛出:

UnsupportedEncodingException

parseJSON

public static Object parseJSON(String json)

Parse it by JSON format

返回:

the parsed result

assertAsMap

public static Map<String,Object> assertAsMap(Object object)

Assert a value, if it is a map, return it, otherwise throws

返回:

the map value

readAsBytes

public static byte[] readAsBytes(InputStream stream)
                          throws IOException

Read data from a readable stream, and compose it to a bytes

参数:

stream - the readable stream

返回:

the bytes result

抛出:

IOException

readAsString

public static String readAsString(InputStream stream)
                           throws IOException

Read data from a readable stream, and compose it to a string

参数:

stream - the readable stream

返回:

the string result

抛出:

IOException

readAsJSON

public static Object readAsJSON(InputStream stream)
                         throws IOException

Read data from a readable stream, and parse it by JSON format

参数:

stream - the readable stream

返回:

the parsed result

抛出:

IOException

getNonce

public static String getNonce()

Generate a nonce string

返回:

the nonce string

getDateUTCString

public static String getDateUTCString()

Get an UTC format string by current date, e.g. 'Thu, 06 Feb 2020 07:32:54 GMT'

返回:

the UTC format string

defaultString

public static String defaultString(String str,
                                   String defaultStr)

If not set the real, use default value

返回:

the return string

defaultNumber

public static Number defaultNumber(Number number,
                                   Number defaultNumber)

If not set the real, use default value

返回:

the return string

toFormString

public static String toFormString(Map<String,?> map)
                           throws UnsupportedEncodingException

Format a map to form string, like a=a%20b%20c

返回:

the form string

抛出:

UnsupportedEncodingException

toJSONString

public static String toJSONString(Object object)

If not set the real, use default value

返回:

the return string

empty

public static boolean empty(String str)

Check the string is empty?

返回:

if string is null or zero length, return true

equalString

public static boolean equalString(String str,
                                  String val)

Check one string equals another one?

返回:

if equals, return true

equalNumber

public static boolean equalNumber(Number num,
                                  Number val)

Check one number equals another one?

返回:

if equals, return true

isUnset

public static boolean isUnset(Object object)

Check one value is unset

返回:

if unset, return true

stringifyMapValue

public static Map<String,String> stringifyMapValue(Map<String,?> map)

Stringify the value of map

返回:

the new stringified map

getUserAgent

public static String getUserAgent(String val)
                           throws Exception

抛出:

Exception