spring boot 集成solr

首先solr服務器安裝過程不再贅述，在客戶端集成的時候踩了點坑，記錄下來，大家一起學習~

在pom文件的

dependencyManagement -》 dependencies 

標籤裏面添加

<dependency>
 	<groupId>org.springframework.data</groupId>
	<artifactId>spring-data-solr</artifactId>
	<version>${spring.data.solr.version}</version>
</dependency>

properties 

標籤裏面添加

<spring.data.solr.version>2.1.1.RELEASE</spring.data.solr.version>

下面是solr的jar包，

<!-- https://mvnrepository.com/artifact/org.springframework.data/spring-data-solr -->
		<dependency>
			<groupId>org.springframework.data</groupId>
			<artifactId>spring-data-solr</artifactId>
		</dependency>

注入SolrClient,及相關代碼

 @Autowired
    private SolrClient client;

    @RequestMapping("/testSolr")
    public String testSolr(String param) throws IOException, SolrServerException {
        try {
            //查詢參數對象，繼承了SolrParams抽象類
            ModifiableSolrParams params =new ModifiableSolrParams();
            //查詢條件
            params.add("q","companyName:*"+param+"*");
            //這裏的分頁和mysql分頁一樣
            params.add("start","0");
            params.add("rows","10");
            QueryResponse query = client.query(params);
            //查詢結果
            SolrDocumentList results = query.getResults();
            //將查詢結果直接轉化爲List，這裏有個坑，對象每個屬性必須要加 @Field("id") 屬性，包爲import org.apache.solr.client.solrj.beans.Field;
            //如果不加屬性的話，會返回相等長度的的List，但是List裏面每個對象的值均爲空
            List<SimplePublicCustomer> beans = query.getBeans(SimplePublicCustomer.class);
            return results.toString();
        }catch (Exception e){
            e.printStackTrace();
        }
       return null;
    }

完~

tips：

因爲本人比較懶。所以不想去解析返回來的值，再一個一個組裝成List，所以看了下query.getBeans 這個方法的 源碼：

        

 

 DocumentObjectBinder  類
 public <T> List<T> getBeans(Class<T> clazz, SolrDocumentList solrDocList) {

        List fields = this.getDocFields(clazz); //這個句話獲取你對象裏面的屬性列表
        ArrayList result = new ArrayList(solrDocList.size());
        Iterator i$ = solrDocList.iterator();

        while(i$.hasNext()) {
            SolrDocument sdoc = (SolrDocument)i$.next();
            result.add(this.getBean(clazz, fields, sdoc));
        }

        return result;
    }

    private List<DocumentObjectBinder.DocField> getDocFields(Class clazz) {
        List fields = (List)this.infocache.get(clazz);    	
        if(fields == null) {
            Map var3 = this.infocache;
            synchronized(this.infocache) {
                this.infocache.put(clazz, fields = this.collectInfo(clazz)); //從緩存中獲取不到相關信息，則執行collectiInfo方法獲取
            }
        }

        return fields;
    }

    private List<DocumentObjectBinder.DocField> collectInfo(Class clazz) {
        ArrayList fields = new ArrayList();
        Class superClazz = clazz;

        ArrayList members;
        for(members = new ArrayList(); superClazz != null && superClazz != Object.class; superClazz = superClazz.getSuperclass()) {
            members.addAll(Arrays.asList(superClazz.getDeclaredFields()));
            members.addAll(Arrays.asList(superClazz.getDeclaredMethods()));
        }

        boolean childFieldFound = false;
        Iterator i$ = members.iterator();

        while(i$.hasNext()) { 
            final AccessibleObject member = (AccessibleObject)i$.next();
            if(member.isAnnotationPresent(Field.class)) {            //重點：獲取當前字段的註解，如果沒有註解，則不添加此字段！
                AccessController.doPrivileged(new PrivilegedAction() {
                    @SuppressForbidden(
                        reason = "Needs access to possibly private @Field annotated fields/methods"
                    )
                    public Void run() {
                        member.setAccessible(true);
                        return null;
                    }
                });
                DocumentObjectBinder.DocField df = new DocumentObjectBinder.DocField(member);
                if(df.child != null) {
                    if(childFieldFound) {
                        throw new BindingException(clazz.getName() + " cannot have more than one Field with child=true");
                    }

                    childFieldFound = true;
                }

                fields.add(df);
            }
        }

        return fields;
    }

基本上就這些，solr客戶端集成基本完事，更詳細的請看api等資料。