1、TextForm
public class TextForm {
/**
* 左边距
*/
protected int paddingL = 1;
/**
* 右边距
*/
protected int paddingR = 1;
/**
* 标题
*/
protected List<String> title = new ArrayList<>();
/**
* 数据
*/
protected List<List<String>> datas = new ArrayList<>();
/**
* 最大列数
*/
protected int maxCol = 0;
/**
* 每个单元格最大字符数
*/
protected int colMaxLength = 8;
/**
* 表格组成符号
*/
protected char separator = '.';
private TextForm() {
}
public static TextFormBulider bulider() {
return new TextFormBulider(new TextForm());
}
/**
* 格式化输出表格
*/
public void printFormat() {
List<List<String>> formData = new ArrayList<>();
formData.add(title);
formData.addAll(datas);
Map<Integer, Integer> colMaxLengthMap = colMaxLength(formData);
for (int i = 0; i < formData.size(); i++) {
List<String> row = formData.get(i);
for (int j = 0; j < row.size(); j++) {
Formatter formatter = new Formatter();
String str = row.get(j);
if (str.length() > colMaxLength) {
str = str.substring(0, colMaxLength);
}
int chineseNum = getChineseNum(str);
Integer maxLength = colMaxLengthMap.get(j);
String val = formatter.format("%-" + (maxLength - chineseNum) + "s", str).toString();
row.set(j, val);
}
}
Map<Integer, Integer> colMinBlankLengthMap = colMinBlankLength(formData);
for (int i = 0; i < formData.size(); i++) {
List<String> row = formData.get(i);
for (int j = 0; j < row.size(); j++) {
String val = row.get(j);
Integer minBlankLength = colMinBlankLengthMap.get(j);
val = val.substring(0, val.length() - minBlankLength);
row.set(j, val);
}
}
String line = "";
List<String> rows = new ArrayList<>();
for (List<String> strings : formData) {
String plStr = "";
String pRStr = "";
for(int index=0;index<paddingL;index++) {
plStr = plStr + " ";
}
for(int index=0;index<paddingR;index++) {
pRStr = pRStr + " ";
}
String pL = plStr;
String pR = pRStr;
String row = separator + pL + String.join(pL + separator + pR, strings) + pR + separator;
if (line.length() < row.length()) {
String lineStr = "";
for(int index=0;index<row.length();index++) {
lineStr = lineStr + separator;
}
line = lineStr;
}
rows.add(row);
}
System.out.println(line);
for (String row : rows) {
System.out.println(row);
System.out.println(line);
}
}
/**
* 找到每一列最大的长度
*
* @param formData
* @return
*/
private Map<Integer, Integer> colMaxLength(List<List<String>> formData) {
Map<Integer, Integer> map = new HashMap<>();
for (int i = 0; i < formData.size(); i++) {
int col = 0;
List<String> strings = formData.get(i);
while (strings.size() > col) {
String val = strings.get(col);
if (val.length() > colMaxLength) {
val = val.substring(0, colMaxLength);
strings.set(col, val);
}
int length = val.getBytes().length;
Integer integer = map.get(col);
if (integer == null) {
map.put(col, length);
} else {
if (integer < length) {
map.put(col, length);
}
}
col++;
}
}
return map;
}
/**
* 找到每一列从右开始最小的空格长度
*
* @param formData
* @return
*/
private Map<Integer, Integer> colMinBlankLength(List<List<String>> formData) {
Map<Integer, Integer> map = new HashMap<>();
for (int i = 0; i < formData.size(); i++) {
int col = 0;
List<String> strings = formData.get(i);
while (strings.size() > col) {
String val = strings.get(col);
int length = 0;
for (int i1 = val.length() - 1; i1 >= 0; i1--) {
if (val.charAt(i1) == ' ') {
length++;
} else {
break;
}
}
Integer integer = map.get(col);
if (integer == null) {
map.put(col, length);
} else {
if (integer > length) {
map.put(col, length);
}
}
col++;
}
}
return map;
}
/**
* 获取中文数量
*
* @param val
* @return
*/
private int getChineseNum(String val) {
if (val == null) {
val = "null";
}
String regex = "[u4e00-u9fa5|。|，]";
ArrayList<String> list = new ArrayList<String>();
Pattern pattern = Pattern.compile(regex);
Matcher matcher = pattern.matcher(val);
while (matcher.find()) {
list.add(matcher.group());
}
int size = list.size();
return size;
}
}
2、TextFormBulider
public class TextFormBulider {
private TextForm textForm;
protected TextFormBulider(TextForm textForm) {
this.textForm = textForm;
}
public TextFormBulider setTitle(String... titles) {
if (textForm.maxCol < titles.length) {
textForm.maxCol = titles.length;
}
for (String title : titles) {
if (title == null) {
title = "null";
}
textForm.title.add(title);
}
return this;
}
public TextFormBulider setPaddingL(int paddingL) {
textForm.paddingL = paddingL;
return this;
}
public TextFormBulider setPaddingR(int paddingR) {
textForm.paddingR = paddingR;
return this;
}
public TextFormBulider setSeparator(char separator) {
textForm.separator = separator;
return this;
}
public TextFormBulider setColMaxLength(int colMaxLength) {
textForm.colMaxLength = colMaxLength;
return this;
}
public TextFormBulider addRow(String... cols) {
if (textForm.maxCol < cols.length) {
textForm.maxCol = cols.length;
}
List<String> list = new ArrayList<>(cols.length);
for (String col : cols) {
if (col == null) {
col = "null";
}
list.add(col);
}
textForm.datas.add(list);
return this;
}
public TextForm finish() {
int titleSize = textForm.title.size();
if (titleSize < textForm.maxCol) {
for (int i = 0; i < textForm.maxCol - titleSize; i++) {
textForm.title.add(null);
}
}
for (List<String> data : textForm.datas) {
int dataSize = data.size();
if (dataSize < textForm.maxCol) {
for (int i = 0; i < textForm.maxCol - dataSize; i++) {
data.add(null);
}
}
}
return textForm;
}
}
3、测试
public class TextFormTest {
public static void main(String[] args) {
TextFormBulider bulider = TextForm.bulider();
bulider.setTitle("name", "age", "sex");
bulider.addRow("王麻345子", "21", "男2");
bulider.addRow("wzeefgrerhei", "21", "男");
bulider.setColMaxLength(5);
bulider.setSeparator('*');
bulider.setPaddingL(2);
bulider.setPaddingR(2);
TextForm testForm = bulider.finish();
testForm.printFormat();
}
}
4、显示结果：
