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实现 request body 重复读取的功能

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This commit is contained in:
YunaiV
2021-02-20 20:18:54 +08:00
parent cb0945962d
commit 8e21b5200a
5 changed files with 45 additions and 120 deletions
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11
ruoyi-common/src/main/java/com/ruoyi/common/config/FilterConfig.java
View File

@@ -44,15 +44,4 @@ public class FilterConfig {
return registration;
}
@SuppressWarnings({"rawtypes", "unchecked"})
@Bean
public FilterRegistrationBean someFilterRegistration() {
FilterRegistrationBean registration = new FilterRegistrationBean();
registration.setFilter(new RepeatableFilter());
registration.addUrlPatterns("/*");
registration.setName("repeatableFilter");
registration.setOrder(FilterRegistrationBean.LOWEST_PRECEDENCE);
return registration;
}
}

45
ruoyi-common/src/main/java/com/ruoyi/common/filter/RepeatableFilter.java
View File

@@ -1,45 +0,0 @@
package com.ruoyi.common.filter;
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import org.springframework.http.MediaType;
import com.ruoyi.common.utils.StringUtils;
/**
* Repeatable 过滤器
*
* @author ruoyi
*/
public class RepeatableFilter implements Filter {
@Override
public void init(FilterConfig filterConfig) throws ServletException {
}
@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
throws IOException, ServletException {
ServletRequest requestWrapper = null;
if (request instanceof HttpServletRequest
&& StringUtils.equalsAnyIgnoreCase(request.getContentType(), MediaType.APPLICATION_JSON_VALUE)) {
requestWrapper = new RepeatedlyRequestWrapper((HttpServletRequest) request, response);
}
if (null == requestWrapper) {
chain.doFilter(request, response);
} else {
chain.doFilter(requestWrapper, response);
}
}
@Override
public void destroy() {
}
}

64
ruoyi-common/src/main/java/com/ruoyi/common/filter/RepeatedlyRequestWrapper.java
View File

@@ -1,64 +0,0 @@
package com.ruoyi.common.filter;
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import javax.servlet.ReadListener;
import javax.servlet.ServletInputStream;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;
import com.ruoyi.common.utils.http.HttpHelper;
/**
* 构建可重复读取inputStream的request
*
* @author ruoyi
*/
public class RepeatedlyRequestWrapper extends HttpServletRequestWrapper {
private final byte[] body;
public RepeatedlyRequestWrapper(HttpServletRequest request, ServletResponse response) throws IOException {
super(request);
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
body = HttpHelper.getBodyString(request).getBytes("UTF-8");
}
@Override
public BufferedReader getReader() throws IOException {
return new BufferedReader(new InputStreamReader(getInputStream()));
}
@Override
public ServletInputStream getInputStream() throws IOException {
final ByteArrayInputStream bais = new ByteArrayInputStream(body);
return new ServletInputStream() {
@Override
public int read() throws IOException {
return bais.read();
}
@Override
public boolean isFinished() {
return false;
}
@Override
public boolean isReady() {
return false;
}
@Override
public void setReadListener(ReadListener readListener) {
}
};
}
}