/**
* Copyright 2008 biaoping.yin
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.frameworkset.common.tag;
import java.io.IOException;
import java.io.OutputStream;
import java.net.URLDecoder;
import java.net.URLEncoder;
import java.util.Date;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.PageContext;
import com.frameworkset.common.tag.pager.tags.PagerDataSet;
import com.frameworkset.util.ValueObjectUtil;
/**
* @author biaoping.yin
*
* To change the template for this generated type comment go to
* Window>Preferences>Java>Code Generation>Code and Comments
*/
public class RequestUtil extends BaseTag {
/* (non-Javadoc)
* @see com.frameworkset.common.tag.BaseTag#generateContent()
*/
public String generateContent() {
return null;
}
/* (non-Javadoc)
* @see com.frameworkset.common.tag.BaseTag#write(java.io.OutputStream)
*/
public void write(OutputStream output) {
}
/**
* 属性或者参数名称
*/
private String name;
private String property;
/**
* request,session,application
* 默认值为request
*/
private String scope;
private String method;
private String parameter;
private String attribute;
private String setAttribute;
public String getSetAttribute() {
return setAttribute;
}
public void setSetAttribute(String setAttribute) {
this.setAttribute = setAttribute;
}
public Object getValue() {
return value;
}
public void setValue(Object value) {
this.value = value;
}
/**
* 当method为set时，指定值到request中
*
*/
private Object value;
private String dateformat;
private String defaultValue = null;
/**
* 对输出进行编码
*/
private String encode = null;
/**
* 对输出进行解码
*/
private String decode = null;
public int doStartTag() {
Object outStr = null;
HttpServletRequest request = getHttpServletRequest();
// HttpSession session = request.getSession(false) ;
if (name != null)
{
try {
//获取对象属性的值
if (property != null)
outStr = this.getBeanValue();
else
//获取参数值
outStr = this.getParameter(name);
} catch (Exception e) {
e.printStackTrace();
return SKIP_BODY;
}
}
if(this.setAttribute != null )
{
if(value != null)
{
if(this.scope == null || this.scope.equals("request"))
request.setAttribute(setAttribute, value);
else if(this.scope.equals("session"))
{
request.getSession(true).setAttribute(setAttribute, value);
}
else if(this.scope.equals("application"))
{
this.pageContext.setAttribute(setAttribute, value,PageContext.APPLICATION_SCOPE);
}
}
else
{
if(this.scope == null || this.scope.equals("request"))
request.removeAttribute(setAttribute);
else if(this.scope.equals("session"))
{
request.getSession(true).removeAttribute(setAttribute);
}
else if(this.scope.equals("application"))
{
this.pageContext.removeAttribute(setAttribute, PageContext.APPLICATION_SCOPE);
}
}
}
else
if (method != null && method.trim().length() > 0) {
try {
{
//方法有参数时
if (getParameter() != null)
outStr =
ValueObjectUtil.getValueByMethodName(
request,
method,
new Object[] { getParameter()});
//方法无参数时
else
outStr =
(ValueObjectUtil
.getValueByMethodName(request, method, null));
}
} catch (Exception e) {
e.printStackTrace();
return SKIP_BODY;
}
}
if (this.parameter != null) {
try {
outStr = (getParameterValue(parameter));
} catch (Exception e1) {
// TODO 自动生成 catch 块
e1.printStackTrace();
return SKIP_BODY;
}
}
if (this.attribute != null) {
try {
outStr = (getAttributeValue(attribute));
} catch (Exception e1) {
// TODO 自动生成 catch 块
return SKIP_BODY;
}
}
if(outStr != null)
{
if(this.getDateformat() != null &&
!this.getDateformat().equals(""))
{
if(outStr instanceof Date)
{
try
{
outStr =PagerDataSet.formatDate(request,outStr, dateformat);
}
catch (Exception e)
{
// TODO: handle exception
}
}
}
}
String output = outStr == null?"":outStr.toString();
JspWriter out = this.getJspWriter();
try {
if (this.getEncode() == null && this.getDecode() == null)
out.print(output);
else if (getEncode() != null && this.getEncode().trim().equals("true"))
out.print(URLEncoder.encode(output));
else if (getDecode() != null && this.getDecode().trim().equals("true"))
out.print(URLDecoder.decode(output));
} catch (IOException e1) {
e1.printStackTrace();
}
return SKIP_BODY;
}
private Object getBeanValue() {
HttpServletRequest request = getHttpServletRequest();
// HttpSession session = request.getSession(false) ;
Object obj = request.getAttribute(name);
if (obj != null) {
Object value = ValueObjectUtil.getValue(obj, property);
if (value == null) {
return this.defaultValue == null ? "" : defaultValue;
}
return value;
}
return this.defaultValue == null ? null : defaultValue;
}
private Object getParameter(String parameter) {
HttpServletRequest request = getHttpServletRequest();
// HttpSession session = request.getSession(false) ;
Object value = request.getParameter(parameter);
if(value == null)
{
value = request.getAttribute(parameter);
}
if (value == null) {
return this.defaultValue == null ? null : defaultValue;
}
return value;
}
private String getParameterValue(String parameter) {
HttpServletRequest request = getHttpServletRequest();
// HttpSession session = request.getSession(false) ;
String value = request.getParameter(parameter);
if (value == null) {
return this.defaultValue == null ? "" : defaultValue;
}
return value;
}
private Object getAttributeValue(String attribute) {
HttpServletRequest request = getHttpServletRequest();
// HttpSession session = request.getSession(false) ;
Object value = request.getAttribute(attribute);
if (value == null) {
return this.defaultValue == null ? null : defaultValue;
}
return value;
}
/**
* @return String
*/
public String getName() {
return name;
}
/**
* @return String
*/
public String getProperty() {
return property;
}
/**
* @return scope
*/
public String getScope() {
return scope;
}
/**
* @param string
*/
public void setName(String string) {
name = string;
}
/**
* @param string
*/
public void setProperty(String string) {
property = string;
}
/**
* @param i
*/
public void setScope(String i) {
scope = i;
}
/**
* @return String
*/
public String getMethod() {
return method;
}
/**
* @param string
*/
public void setMethod(String string) {
method = string;
}
/**
* @return String
*/
public String getAttribute() {
return attribute;
}
/**
* @return String
*/
public String getParameter() {
return parameter;
}
/**
* @param string
*/
public void setAttribute(String string) {
attribute = string;
}
@Override
public void doFinally() {
// TODO Auto-generated method stub
super.doFinally();
/**
* 属性或者参数名称
*/
name = null;
property = null;
/**
* request,session,application
* 默认值为request
*/
scope = null;
method = null;
parameter = null;
attribute = null;
setAttribute = null;
/**
* 当method为set时，指定值到request中
*
*/
value = null;
dateformat = null;
defaultValue = null;
/**
* 对输出进行编码
*/
encode = null;
/**
* 对输出进行解码
*/
decode = null;
}
/**
* @param string
*/
public void setParameter(String string) {
parameter = string;
}
/**
* @return 参数的缺省值
*/
public String getDefaultValue() {
return defaultValue;
}
/**
* @param string
*/
public void setDefaultValue(String string) {
defaultValue = string;
}
/**
* Description: 是否编码，“true” or “false” default :false
* @return 是否编码：“true” or “false”
* String
*/
public String getDecode() {
return decode;
}
/**
* Description:
* @return
* String
*/
public String getEncode() {
return encode;
}
/**
* Description:
* @param string
* void
*/
public void setDecode(String string) {
decode = string;
}
/**
* Description:
* @param string
* void
*/
public void setEncode(String string) {
encode = string;
}
public String getDateformat()
{
return dateformat;
}
public void setDateformat(String dateformat)
{
this.dateformat = dateformat;
}
}