谁有java读取dxf文件的例程? 只要有DXF文件格式标准,可以自己实现。我记得AutoCAD公司发布了R12、R13、R14的相关格式。 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 给你一个读取世界图的java。//ReadWorldmap.java//读取世界图对象import java.io.*;import java.util.*;import java.net.*;public class ReadWorldmap{private URL url;private String FileName;private InputStream inStream;private InputStreamReader inStreamReader;private BufferedReader bReader;private String temp,temp1,temp2,temp3;private int line;public Worldmap worldmap=new Worldmap();//构造函数,context是索引文件所在的URL,spec是世界图名public ReadWorldmap(URL context,String SetName,String spec) {line=0;this.url=context;FileName=spec+".NDX";try{//inStream=(new URL(url,"\\"+SetName+"\\"+spec+"\\"+FileName)).openStream();inStream=(new URL(url,SetName+"/"+spec+"/"+FileName)).openStream();inStreamReader=new InputStreamReader(inStream);bReader=new BufferedReader(inStreamReader);// System.out.println(" :) Begin read file "+FileName);}catch(IOException e){// System.out.println("Connection was not found."+"Can not read file "+FileName);}}//****************************************************************************private void error_report(){//System.out.println(" :< error appear at line "+line+"in file "+FileName);}//世界图初始化函数,返回一个世界图对象,在这个世界图对象中,仅包含世界图的基本属性,//如坐标、放大倍数、层的信息等,而不包含具体的实体信息。public Worldmap initialise(){boolean mainFlag=true;double wmy1=0,wmy2=100; //临时变量while(mainFlag){ try{line++;temp=new String(bReader.readLine());}catch(IOException e) { error_report();}temp=temp.trim();StringTokenizer st=new StringTokenizer(temp,"<>,");temp1=st.nextToken();if(temp1.equals("NAME")){temp2=st.nextToken();temp2=temp2.trim();worldmap._worldmap_name =temp2;continue;}if(temp1.equals("DEC_COUNT")){temp2=st.nextToken();temp2=temp2.trim();//worldmap.dec_count=Integer.valueOf(temp2).intValue();continue;}if(temp1.equals("BEGIN_WC")){temp2=st.nextToken();temp2=temp2.trim();temp3=st.nextToken();temp3=temp3.trim();worldmap._begin_world_coordinate_x=Double.valueOf(temp2).doubleValue();// worldmap._begin_world_coordinate_y=Double.valueOf(temp3).doubleValue();wmy2=Double.valueOf(temp3).doubleValue();continue;}if(temp1.equals("END_WC")){temp2=st.nextToken();temp2=temp2.trim();temp3=st.nextToken();temp3=temp3.trim();worldmap._end_world_coordinate_x=Double.valueOf(temp2).doubleValue();// worldmap._end_world_coordinate_y=Double.valueOf(temp3).doubleValue();wmy1=Double.valueOf(temp3).doubleValue();continue;}if(temp1.equals("DECLUTTER")){boolean dec_Flag=true; //标志变量Declutter tempDeclutter=new Declutter();double decy1=0,decy2=100; //临时变量while(dec_Flag){try{temp=new String(bReader.readLine());}catch(IOException e) { error_report(); }temp=temp.trim();StringTokenizer st1=new StringTokenizer(temp,"<>,");temp1=st1.nextToken();temp1=temp1.trim();if(temp1.equals("NO")){temp2=st1.nextToken();temp2=temp2.trim();// tempDeclutter.index=temp2;continue;}if( temp1.equals("NAME")){temp2=st1.nextToken();temp2=temp2.trim();tempDeclutter._declutter_name=temp2;continue;}if(temp1.equals("SEG_COUNT")){temp2=st1.nextToken();temp2=temp2.trim();// tempDeclutter.segment_number=Integer.valueOf(temp2).intValue();continue;}if(temp1.equals("BEGIN_WC")){temp2=st1.nextToken();temp2=temp2.trim();temp3=st1.nextToken();temp3=temp3.trim();tempDeclutter._begin_world_coordinate_x=Double.valueOf(temp2).doubleValue();// tempDeclutter._begin_world_coordinate_y=Double.valueOf(temp3).doubleValue();decy2=Double.valueOf(temp3).doubleValue();continue;}if(temp1.equals("END_WC")){temp2=st1.nextToken();temp2=temp2.trim();temp3=st1.nextToken();temp3=temp3.trim();tempDeclutter._end_world_coordinate_x=Double.valueOf(temp2).doubleValue();// tempDeclutter._end_world_coordinate_y=Double.valueOf(temp3).doubleValue();decy1=Double.valueOf(temp3).doubleValue();continue;}if(temp1.equals("MAX_ZOOM")){temp2=st1.nextToken();temp2=temp2.trim();tempDeclutter._display_zoomfactor_max=Double.valueOf(temp2).doubleValue();continue;}if(temp1.equals("MIN_ZOOM")){temp2=st1.nextToken();temp2=temp2.trim();tempDeclutter._display_zoomfactor_min=Double.valueOf(temp2).doubleValue()*1.1;continue;}if(temp1.equals("SEGMENT")){boolean seg_Flag=true;Segment tempSegment=new Segment();double segy1=0,segy2=100; //临时变量while(seg_Flag){try{temp=new String(bReader.readLine());}catch(IOException e) { error_report();}temp=temp.trim();StringTokenizer s_st=new StringTokenizer(temp,"<>,");temp1=s_st.nextToken();temp1=temp1.trim();if(temp1.equals("NO")){temp2=s_st.nextToken();temp2=temp2.trim();// tempSegment.index=Integer.valueOf(temp2).intValue();continue;}if( temp1.equals("NAME")){temp2=s_st.nextToken();temp2=temp2.trim();tempSegment._segment_name=temp2;continue;}if(temp1.equals("BEGIN_WC")){temp2=s_st.nextToken();temp2=temp2.trim();temp3=s_st.nextToken();temp3=temp3.trim();tempSegment._begin_world_coordinate_x=Double.valueOf(temp2).doubleValue();// tempSegment._begin_world_coordinate_y=Double.valueOf(temp3).doubleValue();segy2=Double.valueOf(temp3).doubleValue();continue;}if(temp1.equals("END_WC")){temp2=s_st.nextToken();temp2=temp2.trim();temp3=s_st.nextToken();temp3=temp3.trim();tempSegment._end_world_coordinate_x=Double.valueOf(temp2).doubleValue();// tempSegment._end_world_coordinate_y=Double.valueOf(temp3).doubleValue();segy1=Double.valueOf(temp3).doubleValue();continue;}if(temp1.equals("MAX_ZOOM")){temp2=s_st.nextToken();temp2=temp2.trim();tempSegment._display_zoomfactor_max=Double.valueOf(temp2).doubleValue();continue;}if(temp1.equals("MIN_ZOOM")){temp2=s_st.nextToken();temp2=temp2.trim();tempSegment._display_zoomfactor_min=Double.valueOf(temp2).doubleValue()*1.1;continue;}if(temp1.equals("/SEGMENT")){seg_Flag=false;tempSegment._begin_world_coordinate_y=segy1;tempSegment._end_world_coordinate_y=segy2;tempDeclutter.add(tempSegment);}}continue;}if(temp1.equals("/DECLUTTER")){dec_Flag=false;tempDeclutter._begin_world_coordinate_y =decy1;tempDeclutter._end_world_coordinate_y =decy2;worldmap.add(tempDeclutter);continue;}}continue;} if(temp1.equals("/WORLDMAP")){mainFlag=false;worldmap._begin_world_coordinate_y =wmy1;worldmap._end_world_coordinate_y =wmy2;continue;}}this.stop();return worldmap;}//读层函数/* public void fillDeclutter(int vector_index) throws NotFoundException{ReadSegment rp;Declutter dec;Segment seg;int dec_index=vector_index;String filename=new String();dec=worldmap.getDeclutterByIndex(dec_index);for(int i=0;i { seg=dec.getSegmentByIndex(i);filename=worldmap._worldmap_name +"_"+dec._declutter_name +"_"+seg._segment_name +".dxf";rp=new ReadSegment(url,seg,filename);rp.execute();}} *///私有函数。关闭所有打开的流,在initialise()函数结束时调用。private void stop(){try{inStream.close();inStreamReader.close();bReader.close();//System.out.println(" :) End read file "+FileName);}catch(IOException e) {}}}GML--Geography Markup Language网络地理信息系统的必然选择,难道你没听说过?呵呵,没关系!一切从头开始! 这个我见过,但是它没有关键 的类worldmap,何况我也看不懂它构造的这个类>>.有没有别的或完整version.? 求一个java正则表达式 java中接受GPRS传输的数据 JFreeChar无法生成class文件 时间格式化问题。。。。急 为什么我做的最后的一个按钮总是窗口大小 问个问题,JAVA有没定时器之类的玩意? 如何能将中文pdf文件中的内容正确的读出来? 如何判断一个字符是ascii字符? 如何把一个APPLICATION 变为APPLET?? java初学者的问题 !!大送分98分! 请教JAVA中读一个文件的时候 我用file.setReadOnly()后怎么解开? 在JTABLE中如何实现左边几列固定不动,水平和垂直滚动条均具有.
//ReadWorldmap.java
//读取世界图对象
import java.io.*;
import java.util.*;
import java.net.*;public class ReadWorldmap
{
private URL url;
private String FileName;
private InputStream inStream;
private InputStreamReader inStreamReader;
private BufferedReader bReader;private String temp,temp1,temp2,temp3;
private int line;public Worldmap worldmap=new Worldmap();//构造函数,context是索引文件所在的URL,spec是世界图名
public ReadWorldmap(URL context,String SetName,String spec)
{
line=0;
this.url=context;
FileName=spec+".NDX";
try
{
//inStream=(new URL(url,"\\"+SetName+"\\"+spec+"\\"+FileName)).openStream();
inStream=(new URL(url,SetName+"/"+spec+"/"+FileName)).openStream();
inStreamReader=new InputStreamReader(inStream);
bReader=new BufferedReader(inStreamReader);
// System.out.println(" :) Begin read file "+FileName);
}
catch(IOException e)
{
// System.out.println("Connection was not found."+"Can not read file "+FileName);
}
}
//****************************************************************************
private void error_report()
{
//System.out.println(" :< error appear at line "+line+"in file "+FileName);
}//世界图初始化函数,返回一个世界图对象,在这个世界图对象中,仅包含世界图的基本属性,
//如坐标、放大倍数、层的信息等,而不包含具体的实体信息。
public Worldmap initialise()
{
boolean mainFlag=true;
double wmy1=0,wmy2=100; //临时变量while(mainFlag)
{
try
{
line++;
temp=new String(bReader.readLine());
}
catch(IOException e) { error_report();}
temp=temp.trim();
StringTokenizer st=new StringTokenizer(temp,"<>,");
temp1=st.nextToken();if(temp1.equals("NAME"))
{
temp2=st.nextToken();
temp2=temp2.trim();
worldmap._worldmap_name =temp2;continue;
}if(temp1.equals("DEC_COUNT"))
{temp2=st.nextToken();
temp2=temp2.trim();
//worldmap.dec_count=Integer.valueOf(temp2).intValue();continue;
}if(temp1.equals("BEGIN_WC"))
{
temp2=st.nextToken();
temp2=temp2.trim();
temp3=st.nextToken();
temp3=temp3.trim();worldmap._begin_world_coordinate_x=Double.valueOf(temp2).doubleValue();
// worldmap._begin_world_coordinate_y=Double.valueOf(temp3).doubleValue();
wmy2=Double.valueOf(temp3).doubleValue();continue;
}if(temp1.equals("END_WC"))
{temp2=st.nextToken();
temp2=temp2.trim();
temp3=st.nextToken();
temp3=temp3.trim();worldmap._end_world_coordinate_x=Double.valueOf(temp2).doubleValue();
// worldmap._end_world_coordinate_y=Double.valueOf(temp3).doubleValue();
wmy1=Double.valueOf(temp3).doubleValue();continue;
}if(temp1.equals("DECLUTTER"))
{
boolean dec_Flag=true; //标志变量
Declutter tempDeclutter=new Declutter();
double decy1=0,decy2=100; //临时变量while(dec_Flag)
{
try
{
temp=new String(bReader.readLine());
}
catch(IOException e) { error_report(); }
temp=temp.trim();
StringTokenizer st1=new StringTokenizer(temp,"<>,");
temp1=st1.nextToken();
temp1=temp1.trim();if(temp1.equals("NO"))
{
temp2=st1.nextToken();
temp2=temp2.trim();// tempDeclutter.index=temp2;continue;
}if( temp1.equals("NAME"))
{
temp2=st1.nextToken();
temp2=temp2.trim();tempDeclutter._declutter_name=temp2;
continue;
}if(temp1.equals("SEG_COUNT"))
{
temp2=st1.nextToken();
temp2=temp2.trim();// tempDeclutter.segment_number=Integer.valueOf(temp2).intValue();
continue;
}if(temp1.equals("BEGIN_WC"))
{
temp2=st1.nextToken();
temp2=temp2.trim();
temp3=st1.nextToken();
temp3=temp3.trim();tempDeclutter._begin_world_coordinate_x=Double.valueOf(temp2).doubleValue();
// tempDeclutter._begin_world_coordinate_y=Double.valueOf(temp3).doubleValue();
decy2=Double.valueOf(temp3).doubleValue();continue;
}if(temp1.equals("END_WC"))
{
temp2=st1.nextToken();
temp2=temp2.trim();
temp3=st1.nextToken();
temp3=temp3.trim();tempDeclutter._end_world_coordinate_x=Double.valueOf(temp2).doubleValue();
// tempDeclutter._end_world_coordinate_y=Double.valueOf(temp3).doubleValue();
decy1=Double.valueOf(temp3).doubleValue();continue;
}if(temp1.equals("MAX_ZOOM"))
{
temp2=st1.nextToken();
temp2=temp2.trim();tempDeclutter._display_zoomfactor_max=Double.valueOf(temp2).doubleValue();
continue;
}if(temp1.equals("MIN_ZOOM"))
{
temp2=st1.nextToken();
temp2=temp2.trim();tempDeclutter._display_zoomfactor_min=Double.valueOf(temp2).doubleValue()*1.1;
continue;
}if(temp1.equals("SEGMENT"))
{
boolean seg_Flag=true;
Segment tempSegment=new Segment();
double segy1=0,segy2=100; //临时变量while(seg_Flag)
{
try
{
temp=new String(bReader.readLine());
}
catch(IOException e) { error_report();}
temp=temp.trim();
StringTokenizer s_st=new StringTokenizer(temp,"<>,");
temp1=s_st.nextToken();
temp1=temp1.trim();if(temp1.equals("NO"))
{
temp2=s_st.nextToken();
temp2=temp2.trim();// tempSegment.index=Integer.valueOf(temp2).intValue();
continue;
}if( temp1.equals("NAME"))
{
temp2=s_st.nextToken();
temp2=temp2.trim();tempSegment._segment_name=temp2;
continue;
}if(temp1.equals("BEGIN_WC"))
{
temp2=s_st.nextToken();
temp2=temp2.trim();
temp3=s_st.nextToken();
temp3=temp3.trim();tempSegment._begin_world_coordinate_x=Double.valueOf(temp2).doubleValue();
// tempSegment._begin_world_coordinate_y=Double.valueOf(temp3).doubleValue();
segy2=Double.valueOf(temp3).doubleValue();continue;
}if(temp1.equals("END_WC"))
{
temp2=s_st.nextToken();
temp2=temp2.trim();
temp3=s_st.nextToken();
temp3=temp3.trim();tempSegment._end_world_coordinate_x=Double.valueOf(temp2).doubleValue();
// tempSegment._end_world_coordinate_y=Double.valueOf(temp3).doubleValue();
segy1=Double.valueOf(temp3).doubleValue();continue;
}if(temp1.equals("MAX_ZOOM"))
{
temp2=s_st.nextToken();
temp2=temp2.trim();tempSegment._display_zoomfactor_max=Double.valueOf(temp2).doubleValue();
continue;
}if(temp1.equals("MIN_ZOOM"))
{
temp2=s_st.nextToken();
temp2=temp2.trim();tempSegment._display_zoomfactor_min=Double.valueOf(temp2).doubleValue()*1.1;
continue;
}if(temp1.equals("/SEGMENT"))
{
seg_Flag=false;tempSegment._begin_world_coordinate_y=segy1;
tempSegment._end_world_coordinate_y=segy2;
tempDeclutter.add(tempSegment);
}
}continue;
}if(temp1.equals("/DECLUTTER"))
{
dec_Flag=false;
tempDeclutter._begin_world_coordinate_y =decy1;
tempDeclutter._end_world_coordinate_y =decy2;
worldmap.add(tempDeclutter);continue;}
}
continue;
} if(temp1.equals("/WORLDMAP"))
{
mainFlag=false;
worldmap._begin_world_coordinate_y =wmy1;
worldmap._end_world_coordinate_y =wmy2;continue;
}
}this.stop();
return worldmap;
}//读层函数
/* public void fillDeclutter(int vector_index) throws NotFoundException
{
ReadSegment rp;
Declutter dec;
Segment seg;
int dec_index=vector_index;
String filename=new String();
dec=worldmap.getDeclutterByIndex(dec_index);for(int i=0;i {
seg=dec.getSegmentByIndex(i);
filename=worldmap._worldmap_name +"_"+dec._declutter_name +"_"+seg._segment_name +".dxf";
rp=new ReadSegment(url,seg,filename);rp.execute();
}
} *///私有函数。关闭所有打开的流,在initialise()函数结束时调用。
private void stop()
{
try
{
inStream.close();
inStreamReader.close();
bReader.close();
//System.out.println(" :) End read file "+FileName);
}
catch(IOException e) {}
}}GML--Geography Markup Language网络地理信息系统的必然选择,难道你没听说过?呵呵,没关系!一切从头开始!