top.dcenter.ums.security.core.oauth.util

类 MvcUtil

java.lang.Object

top.dcenter.ums.security.core.oauth.util.MvcUtil

public final class MvcUtil
extends Object

功能:
1. 通过 ObjectMapper 转换对象到 JSON 字符串
2. 获取 servletContextPath

版本:

V1.0 Created by 2020/9/17 18:32

作者:

YongWu zheng

字段概要

字段

限定符和类型	字段和说明
static String	HEADER_X_REQUESTED_WITH_NAME
static String	X_REQUESTED_WITH

方法概要

限定符和类型	方法和说明
static boolean	isAjaxOrJson(javax.servlet.http.HttpServletRequest request) 判断是否为 ajax 请求或者支持接收 json 格式
static <T> T	json2Object(String jsonString, Class<T> clz) 使用 ObjectMapper 把 jsonString 反序列化为 T 对象.
static byte[]	readAllBytes(InputStream inputStream) Copy from InputStream of JDK11 Reads all remaining bytes from the input stream.
static void	responseWithJson(javax.servlet.http.HttpServletResponse response, int status, String result) 向客户端响应 json 格式
static String[]	splitByCharacterTypeCamelCase(String str, boolean camelCase) Copy from org.apache.commons.lang3.StringUtils Splits a String by Character type as returned by java.lang.Character.getType(char).
static String	toJsonString(Object obj) 通过 ObjectMapper 转换对象到 JSON 字符串, 主要目的用于日志输出对象字符串时使用, 减少 try catch 嵌套, 转换失败记录日志并返回空字符串.

从类继承的方法 java.lang.Object

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

字段详细资料

HEADER_X_REQUESTED_WITH_NAME

public static final String HEADER_X_REQUESTED_WITH_NAME

另请参阅:

常量字段值

X_REQUESTED_WITH

public static final String X_REQUESTED_WITH

另请参阅:

常量字段值

方法详细资料

toJsonString

public static String toJsonString(Object obj)

通过 ObjectMapper 转换对象到 JSON 字符串, 主要目的用于日志输出对象字符串时使用, 减少 try catch 嵌套, 转换失败记录日志并返回空字符串.

参数:

obj - Object

返回:

返回 JSON 字符串, 转换失败记录日志并返回空字符串.

json2Object

@Nullable
public static <T> T json2Object(@NonNull
                                           String jsonString,
                                           @NonNull
                                           Class<T> clz)

使用 ObjectMapper 把 jsonString 反序列化为 T 对象.

参数:

jsonString - json string

clz - 要反序列化的目标 class

返回:

返回反序列化对象, 如果反序列化错误返回 null

isAjaxOrJson

public static boolean isAjaxOrJson(javax.servlet.http.HttpServletRequest request)

判断是否为 ajax 请求或者支持接收 json 格式

参数:

request - request

返回:

但为 ajax 请求或者支持接收 json 格式返回 true

responseWithJson

public static void responseWithJson(javax.servlet.http.HttpServletResponse response,
                                    int status,
                                    String result)
                             throws IOException

向客户端响应 json 格式

参数:

response - response

status - 响应的状态码

result - 相应的结果字符串

抛出:

IOException - IOException

splitByCharacterTypeCamelCase

public static String[] splitByCharacterTypeCamelCase(String str,
                                                     boolean camelCase)

Copy from org.apache.commons.lang3.StringUtils

Splits a String by Character type as returned by java.lang.Character.getType(char). Groups of contiguous characters of the same type are returned as complete tokens, with the following exception: the character of type Character.UPPERCASE_LETTER, if any, immediately preceding a token of type Character.LOWERCASE_LETTER will belong to the following token rather than to the preceding, if any, Character.UPPERCASE_LETTER token.

 StringUtils.splitByCharacterTypeCamelCase(null)         = null
 StringUtils.splitByCharacterTypeCamelCase("")           = []
 StringUtils.splitByCharacterTypeCamelCase("ab de fg")   = ["ab", " ", "de", " ", "fg"]
 StringUtils.splitByCharacterTypeCamelCase("ab   de fg") = ["ab", "   ", "de", " ", "fg"]
 StringUtils.splitByCharacterTypeCamelCase("ab:cd:ef")   = ["ab", ":", "cd", ":", "ef"]
 StringUtils.splitByCharacterTypeCamelCase("number5")    = ["number", "5"]
 StringUtils.splitByCharacterTypeCamelCase("fooBar")     = ["foo", "Bar"]
 StringUtils.splitByCharacterTypeCamelCase("foo200Bar")  = ["foo", "200", "Bar"]
 StringUtils.splitByCharacterTypeCamelCase("ASFRules")   = ["ASF", "Rules"]
 

参数:

str - the String to split, may be null

camelCase - whether to use so-called "camel-case" for letter types

返回:

an array of parsed Strings, null if null String input

从以下版本开始:

2.4

readAllBytes

public static byte[] readAllBytes(InputStream inputStream)
                           throws IOException

Copy from InputStream of JDK11
Reads all remaining bytes from the input stream. This method blocks until all remaining bytes have been read and end of stream is detected, or an exception is thrown. This method does not close the input stream.

When this stream reaches end of stream, further invocations of this method will return an empty byte array.

Note that this method is intended for simple cases where it is convenient to read all bytes into a byte array. It is not intended for reading input streams with large amounts of data.

The behavior for the case where the input stream is asynchronously closed, or the thread interrupted during the read, is highly input stream specific, and therefore not specified.

If an I/O error occurs reading from the input stream, then it may do so after some, but not all, bytes have been read. Consequently the input stream may not be at end of stream and may be in an inconsistent state. It is strongly recommended that the stream be promptly closed if an I/O error occurs.

参数:

inputStream - InputStream

返回:

a byte array containing the bytes read from this input stream

抛出:

IOException - if an I/O error occurs

OutOfMemoryError - if an array of the required size cannot be allocated.

从以下版本开始:

9