formutil.java

java数据库操作工具类

package com.baosight.util;

import java.util.*;

import javax.servlet.http.*;

public class FormUtil {

	private HashMap values = new HashMap();
	public static boolean encoding  = true;
	public static final String DATE_FORMAT = "yyyymmdd";
	public boolean hasValues = false;

	public FormUtil(HttpServletRequest request) throws Exception{
		values = input(request);
		if(values.size() >0 ){
			hasValues= true;
		}
	}

	public boolean hasValues(){
		return hasValues;
	}

	public HashMap getValues(){
		return  values;
	}

	public static HashMap input(HttpServletRequest request)
			throws Exception {
//		if( encoding ){
//			request.setCharacterEncoding("GBK");
//		}
		HashMap properties = new HashMap();
		Enumeration names = request.getParameterNames();
		while (names.hasMoreElements()) {
			String name = (String) names.nextElement();
			String[] values= request.getParameterValues(name);
			if( encoding ){
				for( int i=0;i<values.length;i++){
					String val = StringUtil.native2unicode(values[i]);
					values[i] = val;
				}
			}//end of if( encoding )

			if( values.length == 1 ){
				properties.put(name, values[0]);
			}else{
				properties.put(name, values);
			}
		}
		return properties;
	}

	public boolean hasValue(String name){
		if( name == null) return false;
		if( values.get(name) == null  ){
			return false;
		}else{
			return true;
		}
	}

	public String getString(String name){
		if( name == null) return null;
		if( values.get(name) == null  ){
			return "";
		}

		String rt = (String)values.get(name);
		rt.trim();

		return rt;
	}

        public void setString(String name){
        if( name == null)
        if( values.get(name) == null  ){

        }

        String rt = (String)values.put("oper","");
        rt.trim();
}


	public int getInt(String name){

		if( values.get(name) == null  ){
			throw new RuntimeException("can not find form value named:"+ name);
		}

		String rt = (String)values.get(name);
		rt.trim();

		try{
			int rti = new Integer( rt).intValue();
			return rti ;
		}catch(Exception e){
			throw new RuntimeException(
					"can not convert form's element <"+name+"> (which value is "+ rt +" ) to int"
			);
		}
	}

	public double getDouble(String name) throws Exception{
		if( values.get(name) == null  ){
			throw new NoSuchFieldException("can not find form value named:"+ name);
		}

		String rt = (String)values.get(name);
		rt.trim();

		try{
			double rti = new Double( rt).doubleValue();
			return rti ;
		}catch(Exception e){
			throw new RuntimeException(
					"can not convert form's element <"+name+"> (which value is "+ rt +" ) to double"
			);
		}
	}

	public float getFloat(String name) throws Exception{
		if( values.get(name) == null  ){
			throw new NoSuchFieldException("can not find form value named:"+ name);
		}

		String rt = (String)values.get(name);
		rt.trim();

		try{
			float rti = new Float( rt).floatValue();
			return rti ;
		}catch(Exception e){
			throw new RuntimeException(
					"can not convert form's element <"+name+"> (which value is "+ rt +" ) to float"
			);
		}
	}


	public String[] getArray(String name) throws Exception{
		if( values.get(name) == null  ){
			throw new NoSuchFieldException("can not find form value named:"+ name);
		}
		String[] rt = (String[])values.get(name);
		return rt;
	}

	public java.util.Date getDate(String name) throws Exception{
		if( values.get(name) == null  ){
			throw new NoSuchFieldException("can not find form value named:"+ name);
		}
		String rt = (String)values.get(name);
		rt.trim();
		return TimeUtil.getDate(rt,DATE_FORMAT);
	}
}