???? 困擾了好幾天，一直在嘗試各種方法解決Geotools讀取shp格式對中文編碼的問題。可是昨天一個無意的舉動居然讓我發覺自己做了太多的無用之功。仔細的看了JavaDoc以及shapefile源代碼之后，可以可以明顯的看到ShapefileDataStore的構造函數已經發生了很大的變化：
????
public?static?final?Charset?DEFAULT_STRING_CHARSET?=?Charset.forName("ISO-8859-1");??? 這個是ShapefileDataStore對象中定義的字符編碼。也正是由于其使用ISO-8859-1編碼作為默認編碼，所以一直以來，解決geotools抑或geoserver的中文問題總是連綿不絕。
?? 來看看我在2.4中看到的ShapefileDataStore的新的構造函數（當然，貝塔和我聊天說過好像2.3也是作出了同樣修改的，可惜我沒下2.3的源碼，呵呵，但是2.2以前的版本這一塊貌似是不同的。權當其是2.4中的“新增”之處吧）
?1????public?ShapefileDataStore(URL?url,?boolean?useMemoryMappedBuffer)
?2????????throws?MalformedURLException
?3????{
?4????????this(url,?useMemoryMappedBuffer,?DEFAULT_STRING_CHARSET);
?5????}
?6
?7????public?ShapefileDataStore(URL?url,?boolean?useMemoryMappedBuffer,?Charset?dbfCharset)
?8????????throws?MalformedURLException
?9????{
10????????readWriteLock?=?new?Lock();
11????????namespace?=?null;
12????????this.useMemoryMappedBuffer?=?true;
13????????String?filename?=?null;
14????????shpURL?=?ShapefileDataStoreFactory.toShpURL(url);
15????????dbfURL?=?ShapefileDataStoreFactory.toDbfURL(url);
16????????shxURL?=?ShapefileDataStoreFactory.toShxURL(url);
17????????prjURL?=?ShapefileDataStoreFactory.toPrjURL(url);
18????????xmlURL?=?ShapefileDataStoreFactory.toXmlURL(url);
19????????this.dbfCharset?=?dbfCharset;
20????} ?????
???
???? 列下使用Geotools 2.4操作shp格式的代碼如下：
??? 代碼1：
?1public?class?ReadShape??{
?2????public?static?void?main(String[]?args)?
?3????????throws?FileNotFoundException,MalformedURLException,IOException{
?4????????
?5????????File?shpFile=new?File("shp/市區地物_point.dbf");
?6????????ShapefileDataStore?shpDataStore=new?ShapefileDataStore(shpFile.toURL());
?7????????shpDataStore.setStringCharset(Charset.forName("GBK"));
?8????????FeatureSource?fs=shpDataStore.getFeatureSource();
?9????????FeatureCollection?collection?=?fs.getFeatures();
10????????FeatureIterator?iterator?=?collection.features();
11????????int?numOfAttr=0;
12????????try?{
13???????????while(?iterator.hasNext()?){
14????????????????Feature?feature?=?iterator.next();
15????????????????numOfAttr?=?feature.getNumberOfAttributes();
16????????????????for(int?i=0;i<numOfAttr;i++){
17????????????????????String?temp=feature.getAttribute(i).toString();
18????????????????????System.out.print(temp+"\t");
19????????????????}
20????????????????
21????????????????System.out.println();
22???????????}
23????????}
24????????finally?{
25???????????iterator.close();
26????????}
27????}
28} ??? 代碼2：
?1public?class?ReadSHP??{
?2????public?static?void?main(String[]?args)?
?3????????throws?FileNotFoundException,MalformedURLException,IOException{
?4
?5????????//初始化FileChannel對象
?6????????FileChannel?in?=?new?FileInputStream("shp/市區地物_point.dbf").getChannel();
?7????????DbaseFileReader?dr=new?DbaseFileReader(in,?true,Charset.forName("UTF-8"));
?8????????DbaseFileHeader?dh?=?dr.getHeader();
?9????????int?fields?=?dh.getNumFields();
10????????for(int?i=0;i<fields;i++){
11????????????System.out.print(dh.getFieldName(i)+"?");//打印當前屬性名
12????????}
13????????System.out.print("\n");
14????????while(dr.hasNext()){
15????????????DbaseFileReader.Row?row?=?dr.readRow();
16????????????for?(int?i=0;i<fields;i++){
17????????????????????Object?data?=?row.read(i);
18????????????????????if(dh.getFieldName(i).equals("NAME")){
19????????????????????????????System.out.print(data);
20????????????????????}else{
21????????????????????????????System.out.print(data);
22????????????????????}
23????????????????????System.out.print("\t");
24????????????}
25????????????System.out.println();
26????????}
27????????dr.close();
28????}
29} ????
????兩段代碼都可以直接運行。當然，從個人角度來看，代碼2是我比較推薦的。不管是效率還是安全性，FileChannel對象比File對象應該還是強一些。
??? 算是又解決了一個問題。
??? 十一期間準備自己寫一個shp2svg和shp2sql的小程序。第一呢，geoserver生成的svg樣式也好，標注名稱也好都好像不太好（也許是我自己對geoserver不熟悉的原因）；第二呢，嚴重懷疑postgis自帶的shp2pgsql這個程序對編碼的支持度。除非我的數據庫編碼是EUN_CN，否則導入的數據是肯定有問題。
??? 不在考慮那些讓我煩心的事情，也不想做一個“人無遠慮，必有近憂”的思想者。一心一意專注于自己的愛好。其他時間也許“身不由己”，但是十一長假還是可以做到的。準備回鄉下，到我的那間田間小屋去，斷網6天！
??