拼音转汉字、SpEL表达式、汉字转拼音

分手后的思念是犯贱 2022-11-28 13:33 216阅读 0赞

**一、SpEL语法案例**

import org.springframework.expression.Expression;
 import org.springframework.expression.ExpressionParser;
 import org.springframework.expression.spel.standard.SpelExpressionParser;
 import org.springframework.expression.spel.support.StandardEvaluationContext;
 import org.springframework.util.PropertyPlaceholderHelper;
 import java.lang.reflect.Field;
 import java.lang.reflect.Method;
 import java.util.*;
 
 public class PlaceholderResolver { 
 
 public static void main(String[] args) throws NoSuchMethodException { 
 ExpressionParser parser = new SpelExpressionParser();
 //字符串解析
 String str = (String) parser.parseExpression("'你好'").getValue();
 System.out.println(str);
 //整型解析
 int intVal = (Integer) parser.parseExpression("0x2F").getValue();
 System.out.println(intVal);
 //双精度浮点型解析
 double doubleVal = (Double) parser.parseExpression("4329759E+22").getValue();
 System.out.println(doubleVal);
 //布尔型解析
 boolean booleanVal = (boolean) parser.parseExpression("true").getValue();
 System.out.println(booleanVal);
 //执行表达式，默认容器是spring本身的容器：ApplicationContext
 List<Integer> result1 = parser.parseExpression("{1,2,3}").getValue(List.class);
 //等同于如下java代码
 Integer[] integer = new Integer[]{ 1,2,3};
 List<Integer> result2 = Arrays.asList(integer);
 //创建ctx容器
 StandardEvaluationContext ctx = new StandardEvaluationContext();
 //获取java自带的Integer类的parseInt(String)方法
 Method parseInt = Integer.class.getDeclaredMethod("parseInt", String.class);
 //将parseInt方法注册在ctx容器内, 推荐这样使用
 ctx.registerFunction("parseInt", parseInt);
 //再将parseInt方法设为parseInt2
 ctx.setVariable("parseInt2", parseInt);
 //创建ExpressionParser解析表达式
 ExpressionParser parsers = new SpelExpressionParser();
 //SpEL语法，比对两个方法执行完成后，结果是否相同
 String expressionString = "#parseInt('2') == #parseInt2('3')";
 //执行SpEL
 Expression expression = parsers.parseExpression(expressionString);
 Boolean values = expression.getValue(ctx, Boolean.class);
 System.out.println(values);
 }
 
 
 private static final PropertyPlaceholderHelper defaultHelper = new PropertyPlaceholderHelper("${", "}");
 private static PlaceholderResolver defaultResolver = new PlaceholderResolver();
 
 private PropertyPlaceholderHelper propertyPlaceholderHelper;
 
 
 private PlaceholderResolver() { 
 propertyPlaceholderHelper = defaultHelper;
 }
 
 private PlaceholderResolver(String placeholderPrefix, String placeholderSuffix) { 
 propertyPlaceholderHelper = new PropertyPlaceholderHelper(placeholderPrefix, placeholderSuffix);
 }
 
 /** * 获取默认的占位符解析器，即占位符前缀为"${", 后缀为"}" * * @return */
 public static PlaceholderResolver getDefaultResolver() { 
 return defaultResolver;
 }
 
 public static PlaceholderResolver getResolver(String placeholderPrefix, String placeholderSuffix) { 
 return new PlaceholderResolver(placeholderPrefix, placeholderSuffix);
 }
 
 /** * 解析带有指定占位符的模板字符串 * 如：content = ${0}今年${1}岁 * values = {"xiaoming", "18"} * result 小明今年18岁 * * @param content 要解析的带有占位符的模板字符串 * @param values 按照模板占位符索引位置设置对应的值 * @return */
 public String resolve(String content, String... values) { 
 return propertyPlaceholderHelper.replacePlaceholders(content, placeholderName -> { 
 return values[Integer.valueOf(placeholderName)];
 });
 }
 
 /** * 解析带有指定占位符的模板字符串 * 如：content = ${0}今年${1}岁 * values = {"xiaoming", "18"} * result 小明今年18岁 * * @param content 要解析的带有占位符的模板字符串 * @param values 按照模板占位符索引位置设置对应的值 * @return */
 public String resolve(String content, Object[] values) { 
 return propertyPlaceholderHelper.replacePlaceholders(content, placeholderName -> { 
 return String.valueOf(values[Integer.valueOf(placeholderName)]);
 });
 }
 
 /** * 根据替换规则来替换指定模板中的占位符值 * * @param content 要解析的字符串 * @param placeholderResolver 解析规则回调 * @return */
 public String resolveByRule(String content, PropertyPlaceholderHelper.PlaceholderResolver placeholderResolver) { 
 return propertyPlaceholderHelper.replacePlaceholders(content, placeholderResolver);
 }
 
 /** * 替换模板中占位符内容，占位符的内容即为map key对应的值，key为占位符中的内容。 * 如：content = ${name}今年${age}岁 * valueMap = name -> 小明; age -> 18 * result 小明今年18岁 * * @param content 模板内容。 * @param valueMap 值映射 * @return 替换完成后的字符串。 */
 public String resolveByMap(String content, final Map<String, Object> valueMap) { 
 return propertyPlaceholderHelper.replacePlaceholders(content, placeholderName -> { 
 return String.valueOf(valueMap.get(placeholderName));
 });
 }
 
 /** * 根据对象中字段路径(即类似js访问对象属性值)替换模板中的占位符 * 如 content = product:${id}:detail:${detail.id} * obj = Product.builder().id(1).detail(Detail.builder().id(2).build()).build(); * 经过解析返回 product:1:detail:2 * * @param content 要解析的内容 * @param obj 填充解析内容的对象(如果是基本类型，则所有占位符都替换为当前基本类型) * @return */
 public String resolveByObject(String content, final Object obj) { 
 if (obj instanceof Map) { 
 return resolveByMap(content, (Map) obj);
 }
 return propertyPlaceholderHelper.replacePlaceholders(content, placeholderName -> { 
 return String.valueOf(getValueByFieldPath(obj, placeholderName));
 });
 }
 
 /** * 获取指定对象中指定字段路径的值 * $(user.name) * * @param obj 取值对象 * @param fieldPath 字段路径(形如 user.name) * @return */
 private Object getValueByFieldPath(Object obj, String fieldPath) { 
 String[] fieldNames = fieldPath.split("\\.");
 Object result = null;
 for (String fieldName : fieldNames) { 
 result = getFieldValue(obj, fieldName);
 if (result == null) { 
 throw new RuntimeException(fieldName + "为空！");
 }
 obj = result;
 }
 return result;
 }
 
 private Object getFieldValue(Object obj, String fieldName) { 
 Class clazz = obj.getClass();
 if (isBaseType(clazz)) { 
 return obj;
 }
 while (clazz != Object.class && clazz != null) { 
 try { 
 Field field = clazz.getDeclaredField(fieldName);
 field.setAccessible(true);
 return field.get(obj);
 } catch (NoSuchFieldException e) { 
 clazz = clazz.getSuperclass();
 } catch (IllegalAccessException e) { 
 throw new RuntimeException("无法访问 " + fieldName);
 }
 }
 throw new IllegalStateException(fieldName + "字段不存在！");
 
 }
 
 /** * 判断class是否为常用类型 * * @param clazz * @return */
 private boolean isBaseType(Class clazz) { 
 return Enum.class.isAssignableFrom(clazz) || CharSequence.class.isAssignableFrom(clazz)
 || Number.class.isAssignableFrom(clazz) || Date.class.isAssignableFrom(clazz);
 }
 
 
 
 /** * 打码隐藏加* * * @param num 号码 * @param front 需要显示前几位 * @param end 需要显示末几位 * @return */
 public static String mask(String num, int front, int end) { 
 // 传入的号码不能为空
 if (num == null || num.length() <= 0) { 
 return null;
 }
 // 需要截取的长度不能大于号码长度
 if ((front + end) > num.length()) { 
 return null;
 }
 //需要截取的不能小于0
 if (front < 0 || end < 0) { 
 return null;
 }
 //计算*的数量
 int asteriskCount = num.length() - (front + end);
 StringBuffer asteriskStr = new StringBuffer();
 for (int i = 0; i < asteriskCount; i++) { 
 asteriskStr.append("*");
 }
 String regex = "(\\w{" + front + "})(\\w+)(\\w{" + end + "})";
 // $1、$2、……表示正则表达式里面第一个、第二个、……括号里面的匹配内容
 return num.replaceAll(regex, "$1" + asteriskStr + "$3");
 }
 }

**二、汉字转拼音**

<dependency>
 <groupId>com.belerweb</groupId>
 <artifactId>pinyin4j</artifactId>
 <version>2.5.0</version>
 </dependency>
 <dependency>
 	 <groupId>com.github.stuxuhai</groupId>
 	 <artifactId>jpinyin</artifactId>
 	 <version>1.1.7</version>
 </dependency>

import java.util.Arrays;
 import java.util.HashSet;
 import java.util.Set;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 import java.util.stream.Collectors;
 
 import com.alibaba.fastjson.JSON;
 import lombok.extern.slf4j.Slf4j;
 import net.sourceforge.pinyin4j.PinyinHelper;
 import net.sourceforge.pinyin4j.format.HanyuPinyinCaseType;
 import net.sourceforge.pinyin4j.format.HanyuPinyinOutputFormat;
 import net.sourceforge.pinyin4j.format.HanyuPinyinToneType;
 import net.sourceforge.pinyin4j.format.HanyuPinyinVCharType;
 import net.sourceforge.pinyin4j.format.exception.BadHanyuPinyinOutputFormatCombination;
 
 @Slf4j
 public class Pinyin4jUtil { 
 
 /** * getFirstSpellPinYin:(多音字的时候获取第一个). * @param src 传入的拼音字符串，以逗号隔开 * @param isFullSpell 是否全拼，true:全拼，false:第一个汉字全拼(其它汉字取首字母) * @return 第一个拼音 */
 public static String getFirstSpellPinYin(String src, boolean isFullSpell) { 
 String targetStr = Pinyin4jUtil.makeStringByStringSet(Pinyin4jUtil.getPinyin(src, isFullSpell));
 String[] split = targetStr.split(",");
 if (split.length > 1) { 
 targetStr = split[0];
 }
 return targetStr;
 }
 
 /** * makeStringByStringSet:(拼音字符串集合转换字符串(逗号分隔)). * @param stringSet 拼音集合 * @return 带逗号字符串 */
 public static String makeStringByStringSet(Set<String> stringSet) { 
 StringBuilder str = new StringBuilder();
 int i = 0;
 if (stringSet.size() > 0) { 
 for (String s : stringSet) { 
 if (i == stringSet.size() - 1) { 
 str.append(s);
 } else { 
 str.append(s + ",");
 }
 i++;
 }
 }
 return str.toString().toLowerCase();
 }
 
 /** * getPinyin:(获取汉字拼音). * @param src 汉字 * @param isFullSpell 是否全拼,如果为true：全拼，false:首字全拼 * @return */
 public static Set<String> getPinyin(String src, boolean isFullSpell) { 
 if (src != null && !src.trim().equalsIgnoreCase("")) { 
 char[] srcChar;
 srcChar = src.toCharArray();
 // 汉语拼音格式输出类
 HanyuPinyinOutputFormat hanYuPinOutputFormat = new HanyuPinyinOutputFormat();
 // 输出设置，大小写，音标方式等
 hanYuPinOutputFormat.setCaseType(HanyuPinyinCaseType.LOWERCASE);
 hanYuPinOutputFormat.setToneType(HanyuPinyinToneType.WITHOUT_TONE);
 hanYuPinOutputFormat.setVCharType(HanyuPinyinVCharType.WITH_V);
 String[][] temp = new String[src.length()][];
 for (int i = 0; i < srcChar.length; i++) { 
 char c = srcChar[i];
 if (String.valueOf(c).matches("[\\u4E00-\\u9FA5]+")) { 
 //中文
 try { 
 temp[i] = PinyinHelper.toHanyuPinyinStringArray(
 srcChar[i], hanYuPinOutputFormat);
 if (!isFullSpell) { 
 if (i == 0) { 
 temp[i] = temp[i];
 } else { 
 String[] tTemps = new String[temp[i].length];
 for (int j = 0; j < temp[i].length; j++) { 
 char t = temp[i][j].charAt(0);
 tTemps[j] = Character.toString(t);
 }
 temp[i] = tTemps;
 }
 }
 } catch (BadHanyuPinyinOutputFormatCombination e) { 
 e.printStackTrace();
 }
 //英文
 } else if (((int) c >= 65 && (int) c <= 90)
 || ((int) c >= 97 && (int) c <= 122)) { 
 temp[i] = new String[] { String.valueOf(srcChar[i]) };
 } else { 
 temp[i] = new String[] { "" };
 }
 }
 String[] pingyinArray = exchange(temp);
 Set<String> pinyinSet = new HashSet<>();
 for (int i = 0; i < pingyinArray.length; i++) { 
 pinyinSet.add(pingyinArray[i]);
 }
 return pinyinSet;
 }
 return null;
 }
 
 /** * 递归 * @param strJaggedArray * @return */
 public static String[] exchange(String[][] strJaggedArray) { 
 String[][] temp = doExchange(strJaggedArray);
 return temp[0];
 }
 
 /** * 递归 * @param strJaggedArray * @return */
 private static String[][] doExchange(String[][] strJaggedArray) { 
 int len = strJaggedArray.length;
 if (len >= 2) { 
 int len1 = strJaggedArray[0].length;
 int len2 = strJaggedArray[1].length;
 int newlen = len1 * len2;
 String[] temp = new String[newlen];
 int Index = 0;
 for (int i = 0; i < len1; i++) { 
 for (int j = 0; j < len2; j++) { 
 temp[Index] = strJaggedArray[0][i] + strJaggedArray[1][j];
 Index++;
 }
 }
 String[][] newArray = new String[len - 1][];
 for (int i = 2; i < len; i++) { 
 newArray[i - 1] = strJaggedArray[i];
 }
 newArray[0] = temp;
 return doExchange(newArray);
 } else { 
 return strJaggedArray;
 }
 }
 
 /** * 判断是否是中文字符串 还是拼音或者英文字符串 * @param str * @return */
 public static boolean isChinese(String str){ 
 String regEx = "[\\u4e00-\\u9fa5]+";
 Pattern p = Pattern.compile(regEx);
 Matcher m = p.matcher(str);
 return m.find();
 }
 
 
 /** * 将字符串转换成拼音数组 * * @param src * @return */
 public static String[] stringToPinyin(String src) { 
 return stringToPinyin(src, false, null);
 }
 
 /** * 将字符串转换成拼音数组 * * @param src * @return */
 public static String[] stringToPinyin(String src, String separator) { 
 return stringToPinyin(src, true, separator);
 }
 
 /** * 将字符串转换成拼音数组 * * @param src * @param isPolyphone * 是否查出多音字的所有拼音 * @param separator * 多音字拼音之间的分隔符 * @return */
 public static String[] stringToPinyin(String src, boolean isPolyphone,
 String separator) { 
 // 判断字符串是否为空
 if ("".equals(src) || null == src) { 
 return null;
 }
 char[] srcChar = src.toCharArray();
 int srcCount = srcChar.length;
 String[] srcStr = new String[srcCount];
 for (int i = 0; i < srcCount; i++) { 
 srcStr[i] = charToPinyin(srcChar[i], isPolyphone, separator);
 }
 return srcStr;
 }
 
 /** * 将单个字符转换成拼音 * * @param src * @return */
 public static String charToPinyin(char src, boolean isPolyphone, String separator) { 
 // 创建汉语拼音处理类
 HanyuPinyinOutputFormat defaultFormat = new HanyuPinyinOutputFormat();
 // 输出设置，大小写，音标方式
 defaultFormat.setCaseType(HanyuPinyinCaseType.LOWERCASE);
 defaultFormat.setToneType(HanyuPinyinToneType.WITHOUT_TONE);
 StringBuffer tempPinying = new StringBuffer();
 // 如果是中文
 if (src > 128) { 
 try { 
 // 转换得出结果
 String[] strs = PinyinHelper.toHanyuPinyinStringArray(src, defaultFormat);
 // 是否查出多音字，默认是查出多音字的第一个字符
 if (isPolyphone && null != separator) { 
 for (int i = 0; i < strs.length; i++) { 
 tempPinying.append(strs[i]);
 if (strs.length != (i + 1)) { 
 // 多音字之间用特殊符号间隔起来
 tempPinying.append(separator);
 }
 }
 } else { 
 tempPinying.append(strs[0]);
 }
 } catch (BadHanyuPinyinOutputFormatCombination e) { 
 log.error("中文转拼音错误：{}",e);
 }
 } else { 
 tempPinying.append(src);
 }
 return tempPinying.toString();
 }
 
 
 public static void main(String[] args) { 
 System.out.println(isChinese("你好呀"));
 System.out.println(JSON.toJSONString(stringToPinyin("你好呀")));
 String string = Arrays.asList(stringToPinyin("你好呀")).stream().collect(Collectors.joining(" "));
 System.out.println(string);
 }
 
 
 
 
 
 }

**三、拼音转汉字**

1、原理是viterbi算法、原理是词库+动态规划、搜狗语料库

参考：[https://github.com/ranchlai/pinyin2hanzi][https_github.com_ranchlai_pinyin2hanzi]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyNDQ3MzAx_size_16_color_FFFFFF_t_70_pic_center]2、喵搜输入法

参考：[https://github.com/crownpku/Somiao-Pinyin][https_github.com_crownpku_Somiao-Pinyin]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyNDQ3MzAx_size_16_color_FFFFFF_t_70_pic_center 1]  
3、隐马尔科夫模型(HMM)实现的拼音转汉字

参考：[https://github.com/KHN190/pinyin][https_github.com_KHN190_pinyin]

[https_github.com_ranchlai_pinyin2hanzi]: https://github.com/ranchlai/pinyin2hanzi
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyNDQ3MzAx_size_16_color_FFFFFF_t_70_pic_center]: /images/20221124/bc06c202fdd14378b8902a870e761f9b.png
[https_github.com_crownpku_Somiao-Pinyin]: https://github.com/crownpku/Somiao-Pinyin
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyNDQ3MzAx_size_16_color_FFFFFF_t_70_pic_center 1]: /images/20221124/6fd63256a1984e46bc19bccd50ccb405.png
[https_github.com_KHN190_pinyin]: https://github.com/KHN190/pinyin