springboot国际化与乱码处理 |
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springboot国际化与乱码处理
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spring boot 国际化与乱码处理
1，maven依赖：
1.1 参数校验的依赖包 javax.validation validation-api org.hibernate hibernate-validator 5.1.0.Final 2，相关配置 2.1 spring校验参数配置 2.1.1 配置说明：messageSource.setDefaultEncoding(“UTF-8”) ：设置配置文件的编码 messageSource.setBasename(“i18n/message”) ：指定国际化配置文件的目录与文件标识头； i18n ：表示国际化文件目录，位于classpath路径下； message ：表示国际化文件标识符，即国际化的文件必须以message开头，用于区分默认文件，中文、英文等； message标识符示例： message.properties : 默认文件 ，一般为中文提示 message_zh_CN.properties : 中文提示文件 message_en_US.peoperties : 英文提示文件 @Configuration public class WebConfig { public MessageSource messageSource() { ResourceBundleMessageSource messageSource = new ResourceBundleMessageSource(); messageSource.setDefaultEncoding("UTF-8"); messageSource.setCacheSeconds(0); messageSource.setBasename("i18n/message"); return messageSource; } /** * 自定义国际化文件存放路径 * * @return */ @Bean public Validator validator() { LocalValidatorFactoryBean validator = new LocalValidatorFactoryBean(); validator.setValidationMessageSource(messageSource()); return validator; } } 2.1.2 自定义国际化处理类示例说明：示例文件将涉及到两个对象：BeanUtil与RedisUtil，BeanUtil工具将在示例之后附上源码，而RedisUtil工具则需要配置与添加其依赖； 示例： package com.huwei.filter; import java.util.Locale; import java.util.Objects; import java.util.concurrent.TimeUnit; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Component; import org.springframework.web.servlet.LocaleResolver; import com.huwei.util.BeanUtil; import com.huwei.util.RedisUtil; /** * 自定义国际化语言解析器 */ @Component public class MyLocaleResolver implements LocaleResolver{ private static final String I18N_LANGUAGE = "i18n_language"; private static final String I18N_LANGUAGE_SESSION = "i18n_language_session"; @Autowired private RedisUtil redisUtil; @Override public Locale resolveLocale(HttpServletRequest req) { String i18n_language = req.getParameter(I18N_LANGUAGE); Locale locale = Locale.getDefault(); if(Objects.nonNull(i18n_language)) { String[] language = i18n_language.split("_"); locale = new Locale(language[0], language[1]); //将国际化语言保存到session // HttpSession session = req.getSession(); // session.setAttribute(I18N_LANGUAGE_SESSION, locale); //分布式系统建议换成到redis，避免多服务之间信息不同步问题； HttpSession session = req.getSession(); String localeJsonString = BeanUtil.toJson(locale); redisUtil.opsForString().set((session.getId() + "#" + I18N_LANGUAGE_SESSION), localeJsonString, 15, TimeUnit.MINUTES); }else { //如果没有带国际化参数，则判断session有没有保存，有保存，则使用保存的，也就是之前设置的，避免之后的请求不带国际化参数造成语言显示不对 // HttpSession session = req.getSession(); // Locale localeInSession = (Locale) session.getAttribute(I18N_LANGUAGE_SESSION); // if(localeInSession != null) { // locale = localeInSession; // } //分布式系统建议换成到redis，避免多服务之间信息不同步问题； HttpSession session = req.getSession(); String localeJson = (String) redisUtil.opsForString().get(session.getId() + "#" + I18N_LANGUAGE_SESSION); Locale localeInRedis = BeanUtil.toBean(localeJson, Locale.class); if(Objects.isNull(localeInRedis)) { locale = localeInRedis; } } return locale; } @Override public void setLocale(HttpServletRequest req, HttpServletResponse res, Locale locale) { } }BeanUtil工具示例： 依赖jar： gson package com.huwei.util; import java.io.UnsupportedEncodingException; import java.lang.reflect.Field; import java.nio.charset.Charset; import java.util.HashMap; import java.util.Map; import java.util.Objects; import com.google.gson.Gson; import com.google.gson.GsonBuilder; import lombok.extern.slf4j.Slf4j; /** * bean util * @author huwei */ @Slf4j public class BeanUtil { static private Gson gson = new GsonBuilder().disableHtmlEscaping().create(); static public Map toMap(Object obj){ return toMap(obj, null); } static public Map toMap(String key ,Object obj){ Map empty = new HashMap(); empty.put(key, obj); return empty; } static public Map toMap(Object obj ,String ...excludeFields){ Map empty = new HashMap(); if(Objects.isNull(obj)) { return empty; } return beanToMap(obj ,excludeFields); } /** * 将 target目标的feild属性值赋值给original对象； * @param original * @param target * @return */ static public T addFeildValueInOrginal(T original ,T target) { if(Objects.isNull(original) || Objects.isNull(target) || !original.getClass().equals(target.getClass())) { return original; } return addFeildValueInOrginal0(original, target); } /** * 将给定的对象转换为json字符串，转换失败返回null * @param obj * @return */ static public String toJson(Object obj) { try { return gson.toJson(obj); } catch (Exception e) { log.warn("---- > switch object to json string is failed ,and that object is : " + obj.toString() ,e); } return null; } /** * 将给定的json字符串转换为给定的class对象，失败返回null * @param json * @param cls * @return */ static public T toBean(String json ,Class cls) { try { return gson.fromJson(json, cls); } catch (Exception e) { log.warn("---- > switch json string to bean is failed ,and that object class is : " + cls + " ,and that json string is : " + json,e); } return null; } static public T toBean(byte[] json ,Class cls) { return toBean(new String(json), cls); } static public T toBean(byte[] json ,Charset charset ,Class cls) { try { return toBean(new String(json ,charset.name()), cls); } catch (UnsupportedEncodingException e) { log.warn("---- > switch json string to bean is failed ,and that object class is : " + cls + " ,and that json string is : " + json + " ;cause is is no given character : " + charset,e); return null; } } static private T addFeildValueInOrginal0(T original, T target) { Field[] originalFields = getDeclaredFields(original); Map targetFields = beanToMap(target, null); if(Objects.isNull(originalFields)) { return original; } for(int i = 0 ,len = originalFields.length ;i originalValue = f.get(original); } catch (IllegalArgumentException e) { } catch (IllegalAccessException e) { } if(!Objects.isNull(originalValue)) { continue; } String name = f.getName(); try { f.set(original, targetFields.get(name)); } catch (IllegalArgumentException | IllegalAccessException e) { // } } return original; } private static Field[] getDeclaredFields(Object original) { return original.getClass().getDeclaredFields(); } private static Map beanToMap(Object obj, String[] excludeFields) { Map result = new HashMap(); Class cls = obj.getClass(); Field[] fields = cls.getDeclaredFields(); if(Objects.isNull(fields) || fields.length == 0) { return result; } for(int i = 0 ,len = fields.length ;i continue; } //获取属性值 Object value = null; try { value = field.get(obj); } catch (IllegalArgumentException e) { } catch (IllegalAccessException e) { } result.put(name, value); } return result; } private static boolean valueInArrays(String name, String[] excludeFields) { if(Objects.isNull(name) || Objects.isNull(excludeFields) || excludeFields.length == 0) { return false; } for(int i = 0 ,len = excludeFields.length ;i return true; } } return false; } public static byte[] toJsonAsBytes(Object obj) { String json = toJson(obj); return Objects.isNull(json) ? new byte[0] : json.getBytes(); } } 2.2 设置开发工具properties编码 2.2.1 eclipse示例：设置路径：window -> perferences -> general -> content types -> text -> java properties file 示例图片： 示例： package com.huwei.entity; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.Id; import javax.persistence.Table; import javax.validation.constraints.NotNull; import javax.validation.constraints.Pattern; import com.huwei.controller.valid.PasswordValid; import com.huwei.controller.valid.PhoneValid; import com.huwei.controller.valid.UsernameValid; import lombok.Data; @Data @Entity @Table(name="t_user") public class User { @Id @GeneratedValue private Long id; @NotNull(message="{prompt.username.null}" ,groups= {UsernameValid.class}) private String username; @Pattern(regexp="^1([358][0-9]|4[579]|66|7[0135678]|9[89])[0-9]{8}$" ,message="{prompt.phone.format}",groups= {PhoneValid.class}) private String phone; @NotNull(message="{prompt.password.null}" ,groups= {PasswordValid.class}) private String password; } 3.2 controller 层使用示例： /** * 请求短信验证码 * @return */ @PostMapping(value="/requestCode",produces = {"application/json; charset=UTF-8"}) public String requestSmsCode(@Validated({PhoneValid.class}) User user ,Errors error ) { return authenticationService.requestSmsCode(user.getPhone()); } |
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