有
比如在
paint(Graphics g){
.........
里面使用
g.setPaint( Color.black );
g.drawRect( 10, 10 ,100, 100 );明白?
比如在
paint(Graphics g){
.........
里面使用
g.setPaint( Color.black );
g.drawRect( 10, 10 ,100, 100 );明白?
调试欢乐多
对
应该是
fillpaint(Graphics g){
.........
里面使用
g.setPaint( Color.black );
g.fillRect( 10, 10 ,100, 100 );
package chinamobile;import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
import java.sql.*;
import java.lang.String;import java.awt.*;
import java.awt.image.*;
import com.sun.image.codec.jpeg.*;public class drawpic extends HttpServlet {
private static final String CONTENT_TYPE = "image/jpeg;charset=GB2312"; public void init() throws ServletException {
} public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doPost(request,response);
} public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException { response.setContentType(CONTENT_TYPE);
String[] Px=null; //存放所有基站的坐标值
String[] Py=null;
int P_totoal=0; String TableName = request.getParameter("TableName");
String XSBH = request.getParameter("XSBH");
String imageFile=request.getParameter("map");
String fontColor="ffff00";
// String[] fontColor=null; //表名 县市编号 图片颜色 图片路径由参数直接辅值
try{
Class.forName("oracle.jdbc.driver.OracleDriver");
String url="jdbc:oracle:thin:@127.0.0.1:1521:ORCL";String user="zhb";
String password="sa";
Connection conn= DriverManager.getConnection(url,user,password);
Statement stmt=conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);String sql="select JZZB_X,JZZB_Y from "+TableName+" "+" where XSBH="+"'"+XSBH+"'";
ResultSet rs=stmt.executeQuery(sql);
while(rs.next())
{
Px[P_totoal]=rs.getString(1) ;
Py[P_totoal]=rs.getString(2) ;
P_totoal++;
}
rs.close();
stmt.close();
conn.close();
}
catch (Exception e)
{System.out.print(e); } ServletOutputStream output=response.getOutputStream(); if(imageFile.toLowerCase().endsWith(".jpeg")||imageFile.toLowerCase().endsWith(".jpg")) {
imageFile = getServletContext().getRealPath(imageFile);
InputStream imageIn = new FileInputStream(new File(imageFile));
JPEGImageDecoder decoder = JPEGCodec.createJPEGDecoder(imageIn);
BufferedImage image = decoder.decodeAsBufferedImage();
Graphics g=image.getGraphics(); //设置颜色
g.setColor(new Color(Integer.parseInt(fontColor,16))); for (int i=0;i<P_totoal;i++)
{
g.drawRect(Integer.parseInt(Px[i]) ,Integer.parseInt(Py[i]),10,10);
g.fillRect(Integer.parseInt(Px[i]) ,Integer.parseInt(Py[i]),10,10);
//输出数据流
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(output);
encoder.encode(image);
}
imageIn.close();
}
output.close();
}
}
那么只能用多边形来做
具体我想你会做的了Polygon