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使用@ResponseBody出现乱码解决方法1、 RequestMapping
Java代码 收藏代码
@Controller
@RequestMapping(value = "/test")
public class TestController {
@ResponseBody
@RequestMapping(value = "/test", method = {RequestMethod.GET})
public String test() {
return "中文";
}
}
2、原因是org.springframework.http.converter.StringHttpMessageConverter类默认编码是IOS-8859-1
3、解决方法
3.1、自己定义一个HttpMessageConverter<String>的实现类即可解决问题。
Java代码 收藏代码
public class UTF8StringHttpMessageConverter extends AbstractHttpMessageConverter<String> {
public static final Charset DEFAULT_CHARSET = Charset.forName("UTF-8");
private final List<Charset> availableCharsets;
private boolean writeAcceptCharset = true;
public UTF8StringHttpMessageConverter() {
super(new MediaType("text", "plain", DEFAULT_CHARSET), MediaType.ALL);
this.availableCharsets = new ArrayList<Charset>(Charset.availableCharsets().values());
}
public void setWriteAcceptCharset(boolean writeAcceptCharset) {
this.writeAcceptCharset = writeAcceptCharset;
}
@Override
public boolean supports(Class<?> clazz) {
return String.class.equals(clazz);
}
@Override
protected String readInternal(@SuppressWarnings("rawtypes") Class clazz, HttpInputMessage inputMessage) throws IOException {
Charset charset = getContentTypeCharset(inputMessage.getHeaders().getContentType());
return FileCopyUtils.copyToString(new InputStreamReader(inputMessage.getBody(), charset));
}
@Override
protected Long getContentLength(String s, MediaType contentType) {
Charset charset = getContentTypeCharset(contentType);
try {
return (long) s.getBytes(charset.name()).length;
}
catch (UnsupportedEncodingException ex) {
throw new InternalError(ex.getMessage());
}
}
@Override
protected void writeInternal(String s, HttpOutputMessage outputMessage) throws IOException {
if (writeAcceptCharset) {
outputMessage.getHeaders().setAcceptCharset(getAcceptedCharsets());
}
Charset charset = getContentTypeCharset(outputMessage.getHeaders().getContentType());
FileCopyUtils.copy(s, new OutputStreamWriter(outputMessage.getBody(), charset));
}
protected List<Charset> getAcceptedCharsets() {
return this.availableCharsets;
}
private Charset getContentTypeCharset(MediaType contentType) {
if (contentType != null && contentType.getCharSet() != null) {
return contentType.getCharSet();
}
else {
return DEFAULT_CHARSET;
}
}
}
Java代码 收藏代码
<mvc:annotation-driven conversion-service="conversion-service" validator="validator">
<mvc:message-converters register-defaults="false">
<bean class="org.springframework.http.converter.ByteArrayHttpMessageConverter" />
<bean class="org.springframework.http.converter.FormHttpMessageConverter" />
<bean class="org.springframework.http.converter.xml.SourceHttpMessageConverter" />
<bean class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter" />
<bean class="my.pkg.UTF8StringHttpMessageConverter" />
</mvc:message-converters>
</mvc:annotation-driven>
3.2、设置StringHttpMessageConverter编码
Java代码 收藏代码
<mvc:annotation-driven conversion-service="conversion-service" validator="validator">
<mvc:message-converters>
<bean class="org.springframework.http.converter.ByteArrayHttpMessageConverter" />
<bean class="org.springframework.http.converter.FormHttpMessageConverter" />
<bean class="org.springframework.http.converter.xml.SourceHttpMessageConverter" />
<bean class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter" />
<bean class="org.springframework.http.converter.StringHttpMessageConverter">
<constructor-arg value="UTF-8" />
</bean>
</mvc:message-converters>
</mvc:annotation-driven>
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