Solutions for geotools supporting Chinese Characters

[Site]: http://www.blogjava.net/sinoly/archive/2007/09/30/geotools_shape.html

It has been plagued for several days and has been trying various methods to solve the problem of geotools reading the SHP format for Chinese encoding. However, an unintentional act yesterday made me realize that I had done too much useless work. After carefully reading the source code of javadoc and shapefile, we can see that the shapefiledatastore constructor has changed a lot:

Public static final charset default_string_charset = charset. forname ("ISO-8859-1 ");

This is the character encoding defined in the shapefiledatastore object. It is precisely because of its use of ISO-8859-1 encoding as the default encoding, so for a long time, to solve the Chinese problems of geotools or geoserver is always endless.
Let's take a look at the new shapefiledatastore constructor I saw in 2.4 (of course, beta and I chat that it seems that 2.3 has made the same change, but unfortunately I didn't get the source code of 2.3, huh, huh, however, versions earlier than 2.2 may seem different. Right when it is "new" in 2.4)

1 Public shapefiledatastore (URL, Boolean usememorymappedbuffer)
2 throws malformedurlexception
3 {
4 This (URL, usememorymappedbuffer, default_string_charset );
5}
6
7 public shapefiledatastore (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}

The code for using geotools 2.4 to operate SHP format in column is as follows:
Code 1:

1 public class readshape {
2 public static void main (string [] ARGs)
3 throws filenotfoundexception, malformedurlexception, ioexception {
4
5 file shpfile = new file ("SHP/city map _ 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 = 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}

Code 2:

1 public class readshp {
2 public static void main (string [] ARGs)
3 throws filenotfoundexception, malformedurlexception, ioexception {
4
5 // initialize the filechannel object
6 filechannel in = new fileinputstream ("SHP/city map _ 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) + ""); // print the current attribute name
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}