我正在处理报告应用程序，其中联系人信息需要显示在页眉上，这样如果信息更多，它会出现在下一列右对齐的表格中。 例如： - 假设联系信息包含5行（A，B，C，D，E），页眉上只允许3行，ti将如下所示： -
A D
B E
C
观察D和E出现在下一行。但是现在A，B，C是随机长度的，我的String缓冲区需要以表格或行和列的形式制作。制作cols
1。）我将联系信息更改为2D数组。 2.）取cols并从该列中找到最大宽度的内容 3.）为每个列行添加空格，以便下一列看起来是右对齐的。
对于第二步，我使用BaseFont获取了特定字符串的宽度 double w = bf.getWidthPoint（s，size）;
找到最大宽度后，这个宽度被视为最大宽度，然后我减去
添加空间=最大宽度 - （A）到A
的宽度同样，添加空间=最大宽度 - （B）到B
的宽度这样D和E就会正确对齐。
但我没有找到方法给予
- ＆GT;空格=高于宽度，用bf
计算这样在pdfs上打印时它就像一张桌子。
以下是示例代码： -
import java.io.FileOutputStream;
import java.io.IOException;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.pdf.BaseFont;
import com.itextpdf.text.pdf.PdfContentByte;
import com.itextpdf.text.pdf.PdfWriter;
public class PrintSpacePdf {
private static String arrNames[] = { "US Rates Strategy Cash",
"Pavan Wadhwa(1-212) 844-4597", "Srini Ramaswamy(1-212) 844-4983",
"Meera Chandan(1-212) 855-4555", "Kimberly Harano(1-212) 823-4996",
"Feng Deng(1-212) 855-2555", "US Rates Strategy Derivatives",
"Srini Ramaswamy(1-212) 811-4999",
"Alberto Iglesias(1-212) 898-5442",
"Praveen Korapaty(1-212) 812-3444", "Feng Deng(1-212) 812-2456",
"US Rates Strategy Derivatives", "Srini Ramaswamy(1-212) 822-4999",
"Alberto Iglesias(1-212) 822-5098",
"Praveen Korapaty(1-212) 812-3655", "Feng Deng(1-212) 899-2222" };
private static int SIZE = arrNames.length;
private static int maxRows = 0;
private static int maxCols = 0;
public static void main(String[] args) {
writeStringToPDF(generateBuffer(), 500, 400, "C://barchart.pdf");
// writeChartToPDF(generatePieChart(), 500, 400, "C://piechart.pdf");
}
public static String generateBuffer() {
maxRows = 5;
maxCols = (SIZE % maxRows == 0) ? SIZE / maxRows : (SIZE / maxRows) + 1;
int size = 5;// fontSize
BaseFont bf;
String buffer = null;
try {
bf = BaseFont.createFont(BaseFont.TIMES_ROMAN, BaseFont.CP1252,
BaseFont.NOT_EMBEDDED);
System.out.println("rows:" + maxRows + "cols:" + maxCols);
String arrData[][] = initializeTableArrays(arrNames);
// showArrayData(arrData);
arrData = addSpacesToArrayContents(arrData, size, bf);
buffer = createBufferWithTableArray(arrData);
} catch (DocumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return buffer;
}
public static String createBufferWithTableArray(String[][] arrData) {
String buffer = "";
for (int r = 0; r < maxRows; r++) {
for (int c = 0; c < maxCols; c++) {
if (arrData[r][c] != null) {
buffer += arrData[r][c];
}
}
buffer += "\n";
}
return buffer;
}
public static String[][] initializeTableArrays(String arrNames[]) {
String arrData[][] = new String[maxRows][maxCols];
int col = 0;
for (int i = 0; i < arrNames.length; i++) {
if (arrNames[i] != null) {
col = 0;
for (int j = i; j < arrNames.length; j += maxRows) {
// System.out.println("i:" + i + "col" + col + "j:" + j);
if (arrNames[j] != null) {
arrData[i][col] = arrNames[j].trim();
arrNames[j] = null;
}
col++;
}
}
}
return arrData;
}
public static String[][] addSpacesToArrayContents(String arrData[][],
int size, BaseFont bf) {
for (int cols = 0; cols < maxCols; cols++) {
double maxWidth = getMaximumColWidth(arrData, cols, size, bf);
for (int rows = 0; rows < maxRows; rows++) {
String s = arrData[rows][cols];
if (s != null) {
double w = bf.getWidthPoint(s, size);
double noOfSpaces = maxWidth - w;
arrData[rows][cols] = addSpaces(s, noOfSpaces);
}
}
}
return arrData;
}
public static double getMaximumColWidth(String[][] arrData, int column,
int size, BaseFont bf) {
double maxSize = 0;
for (int cols = 0; cols < maxCols; cols++) {
for (int rows = 0; rows < maxRows; rows++) {
String s = arrData[rows][cols];
if (s != null) {
double w = bf.getWidthPoint(s, size);
maxSize = (maxSize < w) ? w : maxSize;
}
}
}
return (maxSize);
}
public static String addSpaces(String s, double noOfSpaces) {
for (int i = 0; i < noOfSpaces; i++) {
s = s.concat(" ");
}
return s;
}
public static void showArrayData(String arrData[][]) {
for (int i = 0; i < arrData.length; i++) {
String inner[] = arrData[i];
for (int j = 0; j < inner.length; j++) {
System.out.println("i:" + i + "j:" + j + "->" + inner[j]);
}
System.out.println();
}
}
public static void writeStringToPDF(String buffer, int width, int height,
String fileName) {
PdfWriter writer = null;
Document document = new Document();
try {
writer = PdfWriter.getInstance(document, new FileOutputStream(
fileName));
document.open();
PdfContentByte contentByte = writer.getDirectContent();
System.out.println(buffer);
BaseFont bf = BaseFont.createFont(BaseFont.TIMES_ROMAN,BaseFont.CP1252, BaseFont.NOT_EMBEDDED);
contentByte.beginText();
contentByte.setFontAndSize(bf, 5);
contentByte.showText(buffer);
contentByte.endText();
} catch (Exception e) {
e.printStackTrace();
}
document.close();
}
}
import java.io.FileOutputStream;
import java.io.IOException;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.pdf.BaseFont;
import com.itextpdf.text.pdf.PdfContentByte;
import com.itextpdf.text.pdf.PdfWriter;
public class PrintSpacePdf {
private static String arrNames[] = { "US Rates Strategy Cash",
"Pavan Wadhwa(1-212) 844-4597", "Srini Ramaswamy(1-212) 844-4983",
"Meera Chandan(1-212) 855-4555", "Kimberly Harano(1-212) 823-4996",
"Feng Deng(1-212) 855-2555", "US Rates Strategy Derivatives",
"Srini Ramaswamy(1-212) 811-4999",
"Alberto Iglesias(1-212) 898-5442",
"Praveen Korapaty(1-212) 812-3444", "Feng Deng(1-212) 812-2456",
"US Rates Strategy Derivatives", "Srini Ramaswamy(1-212) 822-4999",
"Alberto Iglesias(1-212) 822-5098",
"Praveen Korapaty(1-212) 812-3655", "Feng Deng(1-212) 899-2222" };
private static int SIZE = arrNames.length;
private static int maxRows = 0;
private static int maxCols = 0;
public static void main(String[] args) {
writeStringToPDF(generateBuffer(), 500, 400, "C://barchart.pdf");
// writeChartToPDF(generatePieChart(), 500, 400, "C://piechart.pdf");
}
public static String generateBuffer() {
maxRows = 5;
maxCols = (SIZE % maxRows == 0) ? SIZE / maxRows : (SIZE / maxRows) + 1;
int size = 5;// fontSize
BaseFont bf;
String buffer = null;
try {
bf = BaseFont.createFont(BaseFont.TIMES_ROMAN, BaseFont.CP1252,
BaseFont.NOT_EMBEDDED);
System.out.println("rows:" + maxRows + "cols:" + maxCols);
String arrData[][] = initializeTableArrays(arrNames);
// showArrayData(arrData);
arrData = addSpacesToArrayContents(arrData, size, bf);
buffer = createBufferWithTableArray(arrData);
} catch (DocumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return buffer;
}
public static String createBufferWithTableArray(String[][] arrData) {
String buffer = "";
for (int r = 0; r < maxRows; r++) {
for (int c = 0; c < maxCols; c++) {
if (arrData[r][c] != null) {
buffer += arrData[r][c];
}
}
buffer += "\n";
}
return buffer;
}
public static String[][] initializeTableArrays(String arrNames[]) {
String arrData[][] = new String[maxRows][maxCols];
int col = 0;
for (int i = 0; i < arrNames.length; i++) {
if (arrNames[i] != null) {
col = 0;
for (int j = i; j < arrNames.length; j += maxRows) {
// System.out.println("i:" + i + "col" + col + "j:" + j);
if (arrNames[j] != null) {
arrData[i][col] = arrNames[j].trim();
arrNames[j] = null;
}
col++;
}
}
}
return arrData;
}
public static String[][] addSpacesToArrayContents(String arrData[][],
int size, BaseFont bf) {
for (int cols = 0; cols < maxCols; cols++) {
double maxWidth = getMaximumColWidth(arrData, cols, size, bf);
for (int rows = 0; rows < maxRows; rows++) {
String s = arrData[rows][cols];
if (s != null) {
double w = bf.getWidthPoint(s, size);
double noOfSpaces = maxWidth - w;
arrData[rows][cols] = addSpaces(s, noOfSpaces);
}
}
}
return arrData;
}
public static double getMaximumColWidth(String[][] arrData, int column,
int size, BaseFont bf) {
double maxSize = 0;
for (int cols = 0; cols < maxCols; cols++) {
for (int rows = 0; rows < maxRows; rows++) {
String s = arrData[rows][cols];
if (s != null) {
double w = bf.getWidthPoint(s, size);
maxSize = (maxSize < w) ? w : maxSize;
}
}
}
return (maxSize);
}
public static String addSpaces(String s, double noOfSpaces) {
for (int i = 0; i < noOfSpaces; i++) {
s = s.concat(" ");
}
return s;
}
public static void showArrayData(String arrData[][]) {
for (int i = 0; i < arrData.length; i++) {
String inner[] = arrData[i];
for (int j = 0; j < inner.length; j++) {
System.out.println("i:" + i + "j:" + j + "->" + inner[j]);
}
System.out.println();
}
}
public static void writeStringToPDF(String buffer, int width, int height,
String fileName) {
PdfWriter writer = null;
Document document = new Document();
try {
writer = PdfWriter.getInstance(document, new FileOutputStream(
fileName));
document.open();
PdfContentByte contentByte = writer.getDirectContent();
System.out.println(buffer);
BaseFont bf = BaseFont.createFont(BaseFont.TIMES_ROMAN,BaseFont.CP1252, BaseFont.NOT_EMBEDDED);
contentByte.beginText();
contentByte.setFontAndSize(bf, 5);
contentByte.showText(buffer);
contentByte.endText();
} catch (Exception e) {
e.printStackTrace();
}
document.close();
}
}
请帮助我们在字符串缓冲区中显示联系人，该联系人相当于使用上述方法的表格。
由于