ServletUtil (hutool-extra 4.1.10 API)

java.lang.Object
- cn.hutool.extra.servlet.ServletUtil

```
public class ServletUtil
extends Object
```
Servlet相关工具类封装

从以下版本开始:

3.2.0

作者:

looly

字段概要

字段
限定符和类型	字段和说明
`static String`	`METHOD_DELETE`
`static String`	`METHOD_GET`
`static String`	`METHOD_HEAD`
`static String`	`METHOD_OPTIONS`
`static String`	`METHOD_POST`
`static String`	`METHOD_PUT`
`static String`	`METHOD_TRACE`

构造器概要

构造器
构造器和说明

ServletUtil()

构造器
构造器和说明
`ServletUtil()`

方法概要

方法
限定符和类型	方法和说明
`static void`	`addCookie(javax.servlet.http.HttpServletResponse response, javax.servlet.http.Cookie cookie)` 设定返回给客户端的Cookie
`static void`	`addCookie(javax.servlet.http.HttpServletResponse response, String name, String value)` 设定返回给客户端的Cookie
`static void`	`addCookie(javax.servlet.http.HttpServletResponse response, String name, String value, int maxAgeInSeconds)` 设定返回给客户端的Cookie Path: "/" No Domain
`static void`	`addCookie(javax.servlet.http.HttpServletResponse response, String name, String value, int maxAgeInSeconds, String path, String domain)` 设定返回给客户端的Cookie
`static <T> T`	`fillBean(javax.servlet.ServletRequest request, T bean, boolean isIgnoreError)` ServletRequest 参数转Bean
`static <T> T`	`fillBean(javax.servlet.ServletRequest request, T bean, CopyOptions copyOptions)` ServletRequest 参数转Bean
`static String`	`getBody(javax.servlet.ServletRequest request)` 获取请求体调用该方法后，getParam方法将失效
`static byte[]`	`getBodyBytes(javax.servlet.ServletRequest request)` 获取请求体byte[] 调用该方法后，getParam方法将失效
`static String`	`getClientIP(javax.servlet.http.HttpServletRequest request, String... otherHeaderNames)` 获取客户端IP 默认检测的Header： 1、X-Forwarded-For 2、X-Real-IP 3、Proxy-Client-IP 4、WL-Proxy-Client-IP otherHeaderNames参数用于自定义检测的Header
`static javax.servlet.http.Cookie`	`getCookie(javax.servlet.http.HttpServletRequest httpServletRequest, String name)` 获得指定的Cookie
`static String`	`getHeader(javax.servlet.http.HttpServletRequest request, String name, String charset)` 获得请求header中的信息
`static String`	`getHeaderIgnoreCase(javax.servlet.http.HttpServletRequest request, String nameIgnoreCase)` 忽略大小写获得请求header中的信息
`static MultipartFormData`	`getMultipart(javax.servlet.ServletRequest request)` 获得MultiPart表单内容，多用于获得上传的文件在同一次请求中，此方法只能被执行一次！
`static MultipartFormData`	`getMultipart(javax.servlet.ServletRequest request, UploadSetting uploadSetting)` 获得multipart/form-data 表单内容包括文件和普通表单数据在同一次请求中，此方法只能被执行一次！
`static Map<String,String>`	`getParamMap(javax.servlet.ServletRequest request)` 获得所有请求参数
`static Map<String,String[]>`	`getParams(javax.servlet.ServletRequest request)` 获得所有请求参数
`static PrintWriter`	`getWriter(javax.servlet.http.HttpServletResponse response)` 获得PrintWriter
`static boolean`	`isGetMethod(javax.servlet.http.HttpServletRequest request)` 是否为GET请求
`static boolean`	`isIE(javax.servlet.http.HttpServletRequest request)` 客户浏览器是否为IE
`static boolean`	`isMultipart(javax.servlet.http.HttpServletRequest request)` 是否为Multipart类型表单，此类型表单用于文件上传
`static boolean`	`isPostMethod(javax.servlet.http.HttpServletRequest request)` 是否为POST请求
`static Map<String,javax.servlet.http.Cookie>`	`readCookieMap(javax.servlet.http.HttpServletRequest httpServletRequest)` 将cookie封装到Map里面
`static void`	`setHeader(javax.servlet.http.HttpServletResponse response, String name, Object value)` 设置响应的Header
`static <T> T`	`toBean(javax.servlet.ServletRequest request, Class<T> beanClass, boolean isIgnoreError)` ServletRequest 参数转Bean
`static void`	`write(javax.servlet.http.HttpServletResponse response, InputStream in)` 返回数据给客户端
`static void`	`write(javax.servlet.http.HttpServletResponse response, InputStream in, int bufferSize)` 返回数据给客户端
`static void`	`write(javax.servlet.http.HttpServletResponse response, InputStream in, String contentType)` 返回数据给客户端
`static void`	`write(javax.servlet.http.HttpServletResponse response, String text, String contentType)` 返回数据给客户端

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
  - METHOD_DELETE
```
public static final String METHOD_DELETE
```
    另请参阅:
    常量字段值
  - METHOD_HEAD
```
public static final String METHOD_HEAD
```
    另请参阅:
    常量字段值
  - METHOD_GET
```
public static final String METHOD_GET
```
    另请参阅:
    常量字段值
  - METHOD_OPTIONS
```
public static final String METHOD_OPTIONS
```
    另请参阅:
    常量字段值
  - METHOD_POST
```
public static final String METHOD_POST
```
    另请参阅:
    常量字段值
  - METHOD_PUT
```
public static final String METHOD_PUT
```
    另请参阅:
    常量字段值
  - METHOD_TRACE
```
public static final String METHOD_TRACE
```
    另请参阅:
    常量字段值
- 构造器详细资料
  - ServletUtil
```
public ServletUtil()
```
- 方法详细资料
  - getParams
```
public static Map<String,String[]> getParams(javax.servlet.ServletRequest request)
```
    获得所有请求参数
    
    参数:
    request - 请求对象ServletRequest
    
    返回:
    Map
  - getParamMap
```
public static Map<String,String> getParamMap(javax.servlet.ServletRequest request)
```
    获得所有请求参数
    
    参数:
    request - 请求对象ServletRequest
    
    返回:
    Map
  - getBody
```
public static String getBody(javax.servlet.ServletRequest request)
```
    获取请求体
    调用该方法后，getParam方法将失效
    
    参数:
    request - ServletRequest
    
    返回:
    获得请求体
    从以下版本开始:
    
    4.0.2
  - getBodyBytes
```
public static byte[] getBodyBytes(javax.servlet.ServletRequest request)
```
    获取请求体byte[]
    调用该方法后，getParam方法将失效
    
    参数:
    request - ServletRequest
    
    返回:
    获得请求体byte[]
    从以下版本开始:
    
    4.0.2
  - fillBean
```
public static <T> T fillBean(javax.servlet.ServletRequest request,
             T bean,
             CopyOptions copyOptions)
```
    ServletRequest 参数转Bean
    
    类型参数:
    T - Bean类型
    参数:
    request - ServletRequest
    bean - Bean
    copyOptions - 注入时的设置
    
    返回:
    Bean
    从以下版本开始:
    
    3.0.4
  - fillBean
```
public static <T> T fillBean(javax.servlet.ServletRequest request,
             T bean,
             boolean isIgnoreError)
```
    ServletRequest 参数转Bean
    
    类型参数:
    T - Bean类型
    参数:
    request - ServletRequest
    bean - Bean
    isIgnoreError - 是否忽略注入错误
    
    返回:
    Bean
  - toBean
```
public static <T> T toBean(javax.servlet.ServletRequest request,
           Class<T> beanClass,
           boolean isIgnoreError)
```
    ServletRequest 参数转Bean
    
    类型参数:
    T - Bean类型
    参数:
    request - ServletRequest
    beanClass - Bean Class
    isIgnoreError - 是否忽略注入错误
    
    返回:
    Bean
  - getClientIP
```
public static String getClientIP(javax.servlet.http.HttpServletRequest request,
                 String... otherHeaderNames)
```
    获取客户端IP
    默认检测的Header：
    1、X-Forwarded-For
    2、X-Real-IP
    3、Proxy-Client-IP
    4、WL-Proxy-Client-IP
    otherHeaderNames参数用于自定义检测的Header
    
    参数:
    request - 请求对象HttpServletRequest
    otherHeaderNames - 其他自定义头文件
    
    返回:
    IP地址
  - getMultipart
```
public static MultipartFormData getMultipart(javax.servlet.ServletRequest request)
                                      throws IORuntimeException
```
    获得MultiPart表单内容，多用于获得上传的文件在同一次请求中，此方法只能被执行一次！
    
    参数:
    request - ServletRequest
    
    返回:
    MultipartFormData
    
    抛出:
    
    IORuntimeException - IO异常
    从以下版本开始:
    
    4.0.2
  - getMultipart
```
public static MultipartFormData getMultipart(javax.servlet.ServletRequest request,
                             UploadSetting uploadSetting)
                                      throws IORuntimeException
```
    获得multipart/form-data 表单内容
    包括文件和普通表单数据
    在同一次请求中，此方法只能被执行一次！
    
    参数:
    request - ServletRequest
    uploadSetting - 上传文件的设定，包括最大文件大小、保存在内存的边界大小、临时目录、扩展名限定等
    
    返回:
    MultiPart表单
    
    抛出:
    
    IORuntimeException - IO异常
    从以下版本开始:
    
    4.0.2
  - getHeaderIgnoreCase
```
public static final String getHeaderIgnoreCase(javax.servlet.http.HttpServletRequest request,
                         String nameIgnoreCase)
```
    忽略大小写获得请求header中的信息
    
    参数:
    request - 请求对象HttpServletRequest
    nameIgnoreCase - 忽略大小写头信息的KEY
    
    返回:
    header值
  - getHeader
```
public static final String getHeader(javax.servlet.http.HttpServletRequest request,
               String name,
               String charset)
```
    获得请求header中的信息
    
    参数:
    request - 请求对象HttpServletRequest
    name - 头信息的KEY
    charset - 字符集
    
    返回:
    header值
  - isIE
```
public static boolean isIE(javax.servlet.http.HttpServletRequest request)
```
    客户浏览器是否为IE
    
    参数:
    request - 请求对象HttpServletRequest
    
    返回:
    客户浏览器是否为IE
  - isGetMethod
```
public static boolean isGetMethod(javax.servlet.http.HttpServletRequest request)
```
    是否为GET请求
    
    参数:
    request - 请求对象HttpServletRequest
    
    返回:
    是否为GET请求
  - isPostMethod
```
public static boolean isPostMethod(javax.servlet.http.HttpServletRequest request)
```
    是否为POST请求
    
    参数:
    request - 请求对象HttpServletRequest
    
    返回:
    是否为POST请求
  - isMultipart
```
public static boolean isMultipart(javax.servlet.http.HttpServletRequest request)
```
    是否为Multipart类型表单，此类型表单用于文件上传
    
    参数:
    request - 请求对象HttpServletRequest
    
    返回:
    是否为Multipart类型表单，此类型表单用于文件上传
  - getCookie
```
public static final javax.servlet.http.Cookie getCookie(javax.servlet.http.HttpServletRequest httpServletRequest,
                                  String name)
```
    获得指定的Cookie
    
    参数:
    httpServletRequest - HttpServletRequest
    name - cookie名
    
    返回:
    Cookie对象
  - readCookieMap
```
public static final Map<String,javax.servlet.http.Cookie> readCookieMap(javax.servlet.http.HttpServletRequest httpServletRequest)
```
    将cookie封装到Map里面
    
    参数:
    httpServletRequest - HttpServletRequest
    
    返回:
    Cookie map
  - addCookie
```
public static final void addCookie(javax.servlet.http.HttpServletResponse response,
             javax.servlet.http.Cookie cookie)
```
    设定返回给客户端的Cookie
    
    参数:
    response - 响应对象HttpServletResponse
    cookie - Servlet Cookie对象
  - addCookie
```
public static final void addCookie(javax.servlet.http.HttpServletResponse response,
             String name,
             String value)
```
    设定返回给客户端的Cookie
    
    参数:
    response - 响应对象HttpServletResponse
    name - Cookie名
    value - Cookie值
  - addCookie
```
public static final void addCookie(javax.servlet.http.HttpServletResponse response,
             String name,
             String value,
             int maxAgeInSeconds,
             String path,
             String domain)
```
    设定返回给客户端的Cookie
    
    参数:
    response - 响应对象HttpServletResponse
    name - cookie名
    value - cookie值
    maxAgeInSeconds - -1: 关闭浏览器清除Cookie. 0: 立即清除Cookie. >0 : Cookie存在的秒数.
    path - Cookie的有效路径
    domain - the domain name within which this cookie is visible; form is according to RFC 2109
  - addCookie
```
public static final void addCookie(javax.servlet.http.HttpServletResponse response,
             String name,
             String value,
             int maxAgeInSeconds)
```
    设定返回给客户端的Cookie
    Path: "/"
    No Domain
    
    参数:
    response - 响应对象HttpServletResponse
    name - cookie名
    value - cookie值
    maxAgeInSeconds - -1: 关闭浏览器清除Cookie. 0: 立即清除Cookie. >0 : Cookie存在的秒数.
  - getWriter
```
public static PrintWriter getWriter(javax.servlet.http.HttpServletResponse response)
                             throws IORuntimeException
```
    获得PrintWriter
    
    参数:
    response - 响应对象HttpServletResponse
    
    返回:
    获得PrintWriter
    
    抛出:
    
    IORuntimeException - IO异常
  - write
```
public static void write(javax.servlet.http.HttpServletResponse response,
         String text,
         String contentType)
```
    返回数据给客户端
    
    参数:
    response - 响应对象HttpServletResponse
    text - 返回的内容
    contentType - 返回的类型
  - write
```
public static void write(javax.servlet.http.HttpServletResponse response,
         InputStream in,
         String contentType)
```
    返回数据给客户端
    
    参数:
    response - 响应对象HttpServletResponse
    in - 需要返回客户端的内容
    contentType - 返回的类型
  - write
```
public static void write(javax.servlet.http.HttpServletResponse response,
         InputStream in)
```
    返回数据给客户端
    
    参数:
    response - 响应对象HttpServletResponse
    in - 需要返回客户端的内容
  - write
```
public static void write(javax.servlet.http.HttpServletResponse response,
         InputStream in,
         int bufferSize)
```
    返回数据给客户端
    
    参数:
    response - 响应对象HttpServletResponse
    in - 需要返回客户端的内容
    bufferSize - 缓存大小
  - setHeader
```
public static void setHeader(javax.servlet.http.HttpServletResponse response,
             String name,
             Object value)
```
    设置响应的Header
    
    参数:
    response - 响应对象HttpServletResponse
    name - 名
    value - 值，可以是String，Date， int

类 ServletUtil

字段概要

构造器概要

方法概要

从类继承的方法 java.lang.Object

字段详细资料

METHOD_DELETE

METHOD_HEAD

METHOD_GET

METHOD_OPTIONS

METHOD_POST

METHOD_PUT

METHOD_TRACE

构造器详细资料

ServletUtil

方法详细资料

getParams

getParamMap

getBody

getBodyBytes

fillBean

fillBean

toBean

getClientIP

getMultipart

getMultipart

getHeaderIgnoreCase

getHeader

isIE

isGetMethod

isPostMethod

isMultipart

getCookie

readCookieMap

addCookie

addCookie

addCookie

addCookie

getWriter

write

write

write

write

setHeader