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优化spel表达式解析工具类

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dark 2021-03-18 23:12:49 +08:00
parent 7f84e44e94
commit 27faa6153a
3 changed files with 43 additions and 7 deletions
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6
src/main/java/cn/iocoder/dashboard/common/annotation/BizTracing.java
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@ -13,7 +13,13 @@ import java.lang.annotation.*;
*/ */
public @interface BizTracing { public @interface BizTracing {
/**
* 交易流水tag名
*/
String BIZ_ID_TAG = "bizId"; String BIZ_ID_TAG = "bizId";
/**
* 交易类型tag名
*/
String BIZ_TYPE_TAG = "bizType"; String BIZ_TYPE_TAG = "bizType";
String bizId(); String bizId();

4
src/main/java/cn/iocoder/dashboard/common/annotation/BizTracingAop.java
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@ -21,8 +21,8 @@ public class BizTracingAop {
@Around(value = "@annotation(bizTracing)") @Around(value = "@annotation(bizTracing)")
public void tagBizInfo(ProceedingJoinPoint joinPoint, BizTracing bizTracing) { public void tagBizInfo(ProceedingJoinPoint joinPoint, BizTracing bizTracing) {
String bizId = SpElUtil.analysisSpEl(bizTracing.bizId(), joinPoint); String bizId = (String) SpElUtil.analysisSpEl(bizTracing.bizId(), joinPoint);
String bizType = SpElUtil.analysisSpEl(bizTracing.bizType(), joinPoint); String bizType = (String) SpElUtil.analysisSpEl(bizTracing.bizType(), joinPoint);
if (StrUtil.isBlankIfStr(bizId)) { if (StrUtil.isBlankIfStr(bizId)) {
log.error("empty biz: bizId[{}], bizType[{}].", bizId, bizType); log.error("empty biz: bizId[{}], bizType[{}].", bizId, bizType);
return; return;

40
src/main/java/cn/iocoder/dashboard/util/sping/SpElUtil.java
View File

@ -9,15 +9,31 @@ import org.springframework.expression.spel.standard.SpelExpressionParser;
import org.springframework.expression.spel.support.StandardEvaluationContext; import org.springframework.expression.spel.support.StandardEvaluationContext;
import java.lang.reflect.Method; import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* SpEl解析类
*
* @author mashu
*/
public class SpElUtil { public class SpElUtil {
private static SpelExpressionParser parser = new SpelExpressionParser();
private static DefaultParameterNameDiscoverer nameDiscoverer = new DefaultParameterNameDiscoverer();
private SpElUtil() { private SpElUtil() {
} }
public static String analysisSpEl(String spElString, ProceedingJoinPoint joinPoint) { /**
SpelExpressionParser parser = new SpelExpressionParser(); * 解析切面SpEL
DefaultParameterNameDiscoverer nameDiscoverer = new DefaultParameterNameDiscoverer(); *
* @param spElString 表达式
* @param joinPoint 切面点
* @return 执行界面
*/
public static Object analysisSpEl(String spElString, ProceedingJoinPoint joinPoint) {
// 通过joinPoint获取被注解方法 // 通过joinPoint获取被注解方法
MethodSignature methodSignature = (MethodSignature) joinPoint.getSignature(); MethodSignature methodSignature = (MethodSignature) joinPoint.getSignature();
Method method = methodSignature.getMethod(); Method method = methodSignature.getMethod();
@ -33,8 +49,22 @@ public class SpElUtil {
for (int i = 0; i < args.length; i++) { for (int i = 0; i < args.length; i++) {
context.setVariable(paramNames[i], args[i]); context.setVariable(paramNames[i], args[i]);
} }
Object value = expression.getValue(context); return expression.getValue(context);
return value == null ? "null" : value.toString(); }
/**
* 批量解析切面SpEL
*
* @param spElStrings 表达式
* @param joinPoint 切面点
* @return 执行界面
*/
public static Map<String, Object> analysisSpEls(List<String> spElStrings, ProceedingJoinPoint joinPoint) {
if (null == spElStrings) {
return null;
}
Map<String, Object> resultMap = new HashMap<>(spElStrings.size());
spElStrings.forEach(expression -> resultMap.put(expression, analysisSpEl(expression, joinPoint)));
return resultMap;
} }
} }