いまだにでてくる文字コードがらみの問題のための
2015/01/18
excel
java
poi
いまだにでてくる文字コードがらみの問題
import java.io.UnsupportedEncodingException;
public class TestMojicode {
public static void main(String[] args) throws Exception {
a();
}
static void a() throws UnsupportedEncodingException {
int[] cps = {0x2012,0x2013,0x2014,0x2015,0x2212};
for (int cp : cps) {
System.out.println("============");
String hex = Integer.toHexString(cp);
System.out.println("hex:" + hex);
final String s = toS(cp);
{
int cp2 = cp(s.charAt(0));
System.out.println(s + ":" + cp2);
}
{
String s1 = to(s, "MS932");
int cp2 = cp(s1.charAt(0));
System.out.println(s1 + ":" + cp2);
}
{
String s2 = to(s, "SJIS");
int cp2 = cp(s2.charAt(0));
System.out.println(s2 + ":" + cp2);
}
}
}
static String to(String s, String charasetName) throws UnsupportedEncodingException {
return new String(s.getBytes(charasetName), charasetName); // 一旦変換してもどす
}
static String toS(int cp) {
char[] ch = Character.toChars(cp);
return new String(ch);
}
static int cp(char c) {
return Character.codePointAt(new char[] { c }, 0, 1);
}
}
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URISyntaxException;
import java.net.URL;
import javax.imageio.stream.FileImageInputStream;
import org.apache.poi.openxml4j.exceptions.InvalidFormatException;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.ss.usermodel.WorkbookFactory;
public class TestPoiExcel extends TestMojicode {
static final String[][] sss = { { "全角ハイフンマイナス", "－" }, { "半角ハイフンマイナス", "-" },
{ "全角ハイフン", "‐" }, { "全角マイナス", "−" }, { "フィギュアダッシュ", "‒" },
{ "全角ダッシュ", "—" }, { "二分ダッシュ", "–" }, { "ホリゾンタルバー", "―" },
{ "全角長音", "ー" }, { "半角長音", "ｰ" }, { "罫線", "─" }, { "罫線", "━" },
{ "いち", "一" }, };
public static void main(String[] args) throws Exception {
c("/Users/nakawakashigeto/export/eclipse/workspace/workspace_closure/zzz_2015/src/doc-files/b.xls");
}
static void c(String file) throws InvalidFormatException, IOException,
URISyntaxException {
File f = new File(file);
InputStream inputStream = new FileInputStream(f);
Workbook workbook = workbook(inputStream);
Sheet sheet = workbook.getSheetAt(0);
a(sheet);
workbook.write(new FileOutputStream(f));
}
static void a(Sheet sheet) throws InvalidFormatException, IOException,
URISyntaxException {
int pos = 0;
for (String[] ss : sss) {
set(sheet, pos, 0, ss[0]);
set(sheet, pos, 1, ss[1]);
set(sheet, pos, 2, to(ss[1], "MS932"));
set(sheet, pos, 3, to(ss[1], "SJIS"));
pos += 1;
}
}
public static void set(Sheet sheet, int r, int c, String s) {
Row row = sheet.getRow(r);
if (row == null) {
row = sheet.createRow(r);
}
Cell cell = row.getCell(c);
if (cell == null) {
cell = row.createCell(c);
}
cell.setCellValue(s);
}
public static Workbook workbook(InputStream inputStream)
throws InvalidFormatException, IOException {
return WorkbookFactory.create(inputStream);
}
}
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