package com.hx.common;
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import com.hx.exception.ParamException;
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import com.hx.exception.ServiceException;
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import org.springframework.beans.propertyeditors.CustomDateEditor;
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import org.springframework.web.bind.WebDataBinder;
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import org.springframework.web.bind.annotation.InitBinder;
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import org.springframework.web.context.request.RequestContextHolder;
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import org.springframework.web.context.request.ServletRequestAttributes;
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import org.springframework.web.context.request.WebRequest;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpSession;
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import java.text.DateFormat;
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import java.text.SimpleDateFormat;
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import java.util.Date;
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/**公共初始化
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* @author ChenJiaHe
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* @Date 2020-06-11
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*/
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public class BaseController {
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/*请不要声明变量，会导致不安全，因为这个是单列*/
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//只需要加上下面这段即可，注意不能忘记注解
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@InitBinder
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public void initBinder(WebDataBinder binder, WebRequest request) {
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//转换日期 注意这里的转化要和传进来的字符串的格式一直 如2015-9-9 就应该为yyyy-MM-dd
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DateFormat dateFormat=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
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binder.registerCustomEditor(Date.class, new CustomDateEditor(dateFormat, true));// CustomDateEditor为自定义日期编辑器
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}
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public HttpServletRequest getRequest() {
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//获取参数对象
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ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
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return attributes.getRequest();
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}
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public HttpSession getSession() {
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//获取参数对象
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return getRequest() .getSession();
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}
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/**
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* 获取request里某个属性
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* @param attrName 属性名称
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* @return 对象
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*/
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public Object getRequestAttribute(String attrName)
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{
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return getRequest().getAttribute(attrName);
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}
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/**
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* 设置一个request属性
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* @param attrName 属性名称
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* @param attrObject 属性值
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*/
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public void setRequestAttribute(String attrName, Object attrObject) {
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getRequest().setAttribute(attrName, attrObject);
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}
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/**
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* 抛出服务异常
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* @param msg 错误信息
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*/
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public void throwServiceException(String msg)
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{
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throw new ServiceException(msg);
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}
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/**
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* 抛出参数异常
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* @param msg 错误信息
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*/
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public void throwParamException(String msg)
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{
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throw new ParamException(msg);
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}
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}
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