com.yishuifengxiao.common.code.generator

Class BaseCodeGenerator

java.lang.Object

com.yishuifengxiao.common.code.generator.BaseCodeGenerator

All Implemented Interfaces:

CodeGenerator

Direct Known Subclasses:

EmailCodeGenerator, ImageCodeGenerator, SmsCodeGenerator

public abstract class BaseCodeGenerator
extends Object
implements CodeGenerator

抽象验证码生成器

Since:

1.0.0

Version:

1.0.0

Author:

yishui

Constructor Summary

Constructors

Constructor and Description
BaseCodeGenerator()

Method Summary

Modifier and Type	Method and Description
protected String	extract(javax.servlet.http.HttpServletRequest request, String key) 根据可以从请求中提取内容

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.yishuifengxiao.common.code.generator.CodeGenerator

generate, generateKey, getCodeInRequest

Constructor Detail

BaseCodeGenerator

public BaseCodeGenerator()

Method Detail

extract

protected String extract(javax.servlet.http.HttpServletRequest request,
                         String key)

根据可以从请求中提取内容

该找接口主要的作用是根据 标识符key从请求中提取出内容，提取策略如下:

• 先从请求头中提取名为标识符key内容
• 接着从请求查询参数中获取名字为 标识符key的内容
• 然后从请求上下文获取名字为 标识符key的内容
• 其次从Session获取名字为 标识符key的内容
• 最后从cookie获取名字为 标识符key的内容

Parameters:

request - 用户请求

key - 验证码标识符

Returns:

提取出来的内容