image img=image.createimage(string pngname); 

 image img=image.createimage(byte[], int offset, int length); 

 package untitled9;  import java.io.*; import java.util.*; import javax.microedition.midlet.*; import javax.microedition.lcdui.*; import javax.microedition.rms.*; import javax.microedition.io.*; public class untitled0     extends midlet     implements commandlistener, itemstatelistener {   display display;   canvas canvas0;   // custom declaration code starts here   public untitled0() {     display = display.getdisplay(this);     canvas0 = new canvas() {       public void paint(graphics g) {         httpconnection content = null;         byte[] contents = null;         try {           content = (httpconnection)  connector.open("http://localhost:8080/wmsserver111/servlet/wms?
version=1.1.1&srs=epsg:4267&request=getmap&layers=layers/beijing/
road&styles=&bbox=-180,-180,180,180&width=
120&height=120&format=image/png"); /************************************************************************ 通过 http 协议建立连接 content 对象，取得 gis 图像数据文件的长度；然后， 按照该文件的长度构造缓冲区 kkk[]；由 content 对象获取输入流， 将数据输入流与数据输入流连接，将 gis 图像数据文件的数据读入缓冲区 kkk[]， 由 kkk[]缓冲区构造静态 gis 图像对象me=image.createimage(kkk,0,kkk.length); 这样就可以构造出静态 gis 图像，从而就可以使用任何绘图语句将图像在 j2me 手机屏幕上。 图像的显示：建立一个画布 canvas，在 canvas 的 paint 事件中，加入如下代码： g.drawimage(me,0, 0, graphics.left| graphics.top); *************************************************************************/ try {     datainputstream _in = new datainputstream(content.openinputstream());         _in.available();         int _length = (int) content.getlength(); if (_length < 1) {           _length = _in.available();           system.out.println(_length);           }         contents = new byte[_length];         _in.readfully(contents);         _in.close();         system.out.println(contents.length);         image img = image.createimage(contents, 0, contents.length - 1);         g.drawimage(img, 0, 0, g.left | g.top);           }           catch (ioexception except) {             except.printstacktrace();           }         }         catch (ioexception excpt0) {           excpt0.printstacktrace();         } }       {         this.addcommand(new command("command1",  command.screen, 1));         setcommandlistener(untitled0.this);       }     };     // custom constructor code starts here   }   public void startapp()  throws midletstatechangeexception  {     display.setcurrent(canvas0);   }   public void pauseapp() {   }   public void destroyapp(boolean unconditional) throws       midletstatechangeexception {   }   public void itemstatechanged(item item) {   }   public void commandaction(command c, displayable d) {     if (c.getlabel().equals("command1") && d == canvas0) { } } } 

 ／／定义rms 数据对象 recordstore rs = null; recordenumeration rs_enum = null; try { ／／创建或打开 rms 内部数据库"gis"  rs = recordstore.openrecordstore("gis",true);  rs_enum = rs.enumeraterecords(null,null,false); } catch ( recordstorefullexception excpt0 ) { } catch ( recordstorenotfoundexception excpt1 ) { } catch ( recordstoreexception excpt2 ) { } try { ／／将 j2me 手机网络获取的图像文件数据写入数据库  rs.addrecord(kkk,0,kkk.length); } catch ( recordstorenotopenexception excpt0 ) { } catch ( recordstorefullexception excpt1 ) { } catch ( recordstoreexception excpt2 ) { } ….. 

 byte[] gisdata = null; try {  gisdata = getrecord(0); } catch ( invalidrecordidexception excpt0 ) { } catch ( recordstorenotopenexception excpt1 ) { } catch ( recordstoreexception excpt2 ) { } …. me=image.createimage(gisdata,0, gisdata.length); ……