package com.vci.web.other;
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import com.vci.web.annotation.BdSelectInput;
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import com.vci.web.dao.BdSelectInputCharDaoI;
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import com.vci.web.model.BdSelectInputCharDO;
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import com.vci.web.util.WebUtil;
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import org.apache.commons.lang3.StringUtils;
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import org.aspectj.lang.JoinPoint;
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import org.aspectj.lang.annotation.After;
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import org.aspectj.lang.annotation.AfterReturning;
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import org.aspectj.lang.annotation.Aspect;
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import org.aspectj.lang.annotation.Pointcut;
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import org.aspectj.lang.reflect.MethodSignature;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.core.DefaultParameterNameDiscoverer;
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import org.springframework.core.ParameterNameDiscoverer;
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import org.springframework.stereotype.Component;
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import javax.annotation.Resource;
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import java.lang.reflect.Method;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.List;
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import java.util.Map;
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import java.util.stream.Collectors;
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/**
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* 可以输入也可以选择的切面程序
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* @author weidy
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* @date 2022-3-16
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*/
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@Aspect
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@Component
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public class BdSelectInputCharAspect {
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/**
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* 当前类的日志输出
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*/
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private Logger logger = LoggerFactory.getLogger(getClass());
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/**
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* 数据操作类
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*/
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@Resource
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private BdSelectInputCharDaoI selectInputCharDao;
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/**
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* 所有的BdSelectInput注解的
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*/
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@Pointcut("execution(public * com.vci..*.*(..)) && @target(com.vci.web.annotation.BdSelectInput) ")
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public void selectInputChar(){
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}
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/**
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* 执行完成后记录
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* @param joinPoint 切入点
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*/
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@AfterReturning(pointcut = "selectInputChar()",returning = "returnVal")
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public void saveChar(JoinPoint joinPoint,Object returnVal){
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try {
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Method method = getMethod(joinPoint);
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//获取方法上的参数
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BdSelectInput selectInput = method.getAnnotation(BdSelectInput.class);
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if (selectInput == null) {
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method.getDeclaredAnnotation(BdSelectInput.class);
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}
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if (selectInput != null) {
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String fieldString = selectInput.value();
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ParameterNameDiscoverer pnd = new DefaultParameterNameDiscoverer();
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String[] parameterNames = pnd.getParameterNames(method);
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Object[] args = joinPoint.getArgs();
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//从参数里面找到对应的值
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String value = getValueFromParam(fieldString, parameterNames, args);
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String flag = selectInput.flag();
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String namespace = selectInput.namespace();
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if (flag == null) {
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flag = "default";
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}
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if (namespace == null) {
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namespace = "default";
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}
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if (StringUtils.isNotBlank(value)) {
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BdSelectInputCharDO sic = new BdSelectInputCharDO();
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sic.setSourceNameSpace(namespace);
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sic.setSourceInputFlag(flag);
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sic.setId(value);
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if (logger.isInfoEnabled()) {
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logger.info("本次保存的字符内容,{0}", sic.toString());
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}
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selectInputCharDao.insert(sic);
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}
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}
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}catch (Throwable e){
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logger.error("切面记录可选字符的时候出错",e);
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}
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}
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/**
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* 多个分隔符
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*/
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public static final String SEP = "${SEP}";
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/**
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* 从参数里获取值
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* @param fieldString 字段的表达式
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* @param parameterNames 参数的名字
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* @param args 参数的对象
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* @return 记录的值
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*/
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private String getValueFromParam(String fieldString, String[] parameterNames, Object[] args) {
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String value = "";
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String[] split = fieldString.split(".");
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if(split.length>0) {
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String paramName = split[0];
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for (int i = 0; i < parameterNames.length; i++) {
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if (paramName.equalsIgnoreCase(parameterNames[i])) {
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Object param = args[i];
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//在看看里面的内容
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if (split.length == 1) {
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//只有一个，那就是这个参数了
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if(param!=null){
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value = param.toString();
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}
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}else{
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//第二层
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Object fieldValue = WebUtil.getValueFromField(split[1],param);
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if(fieldValue instanceof Collection){
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List<String> values = new ArrayList<>();
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((Collection)fieldValue).stream().forEach(fv ->{
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if (split.length > 2) {
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//说明还要往下找
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Object fromField = WebUtil.getValueFromField(split[2], fv);
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values.add(WebUtil.getStringValueFromObject(fromField));
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} else {
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values.add(WebUtil.getStringValueFromObject(fv));
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}
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});
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value = values.stream().collect(Collectors.joining(SEP));
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}else if(fieldValue instanceof Map){
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List<String> values = new ArrayList<>();
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((Map)fieldValue).values().stream().forEach(fv ->{
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if (split.length > 2) {
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//说明还要往下找
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Object fromField = WebUtil.getValueFromField(split[2], fv);
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values.add(WebUtil.getStringValueFromObject(fromField));
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} else {
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values.add(WebUtil.getStringValueFromObject(fv));
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}
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});
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value = values.stream().collect(Collectors.joining(SEP));
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}else {
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if (split.length > 2) {
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//说明还要往下找
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fieldValue = WebUtil.getValueFromField(split[2], fieldValue);
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value = WebUtil.getStringValueFromObject(fieldValue);
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} else {
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value = WebUtil.getStringValueFromObject(fieldValue);
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}
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}
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}
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break;
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}
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}
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}
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return value;
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}
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/**
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* 获取被调用的方法
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* @param joinPoint 切入点
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* @return 调用的方法
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*/
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public Method getMethod(JoinPoint joinPoint){
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MethodSignature signature = (MethodSignature) joinPoint.getSignature();
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Method method = signature.getMethod();
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return method;
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}
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}
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