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五线谱

大谱表: 高音谱表和低音谱表合并起来就是大谱表.

音符

音符是用来记录不同长短的音的进行符号. 音符包括三个组成部分: 符头和符干和符尾.

常见的音符有: 全音符、二分音符、四分音符、八分音符、十六分音符、三十二分音符等.

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自动补全(中文)

定义索引

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[root@icloud-store ~]# curl -XPUT "http://192.168.0.103:9200/index_test?pretty=true" -H 'Content-Type: application/json' -d'
{
    "index": {
        "number_of_shards": "1",
        "number_of_replicas": "1"
    }
}'

定义类型

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[root@icloud-store ~]# curl -XPOST "http://192.168.0.103:9200/index_test/product/_mapping?pretty=true" -H 'Content-Type: application/json' -d'
{
  "properties": {
    "name": {
      "type": "text",
      "analyzer": "ik_smart",
      "search_analyzer": "ik_smart"
    },
    "tag": {
      "type": "text",
      "analyzer": "ik_smart",
      "search_analyzer": "ik_smart"
    },
    "tag_suggest": {
      "type": "completion",
      "analyzer": "ik_smart",
      "search_analyzer": "ik_smart"
    }
  }
}'
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数据索引

字段类型

Elastic数据类型和数据库字段类型映射关系

数据库类型 Elastic类型 说明
String/Varchar keyword 该field不做分词
String/Varchar/Text text 该field会经过分词处理
Integer integer int类型(32bit)
Long long long类型(64bit)
float float 浮点类型(32bit)
double double 浮点类型(64bit)
boolean boolean 布尔类型: true或者false
date/datetime date 日期类型: 2015-10-11, 2015-10-11T22:21:10
bytes/binary binary 二进制类型, 用于存储文件或者字节流
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IK分词插件

插件主页

https://github.com/medcl/elasticsearch-analysis-ik

查看插件

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[elon@icloud-store elasticsearch-6.0.0]$ bin/elasticsearch-plugin list
analysis-ik
analysis-pinyin
analysis-stconvert

分词测试

创建测试索引

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[elon@icloud-store logs]# curl -XPUT "http://192.168.0.103:9200/index_test?pretty=true"
{
  "acknowledged" : true,
  "shards_acknowledged" : true,
  "index" : "index_test"
}
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Elastic下载安装

下载Elastic

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[root@elonsu cloud]# wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-5.6.0.tar.gz
[root@elonsu cloud]# tar -zxvf elasticsearch-5.6.0.tar.gz 
[root@elonsu cloud]# mv elasticsearch-5.6.0 elastic

创建用户

Elastic默认不支持root用户启动, 这里创建用户dennisit

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[root@elonsu cloud]# pwd
/export/cloud
[root@elonsu ~]# adduser dennisit
[root@elonsu ~]# passwd dennisit
Changing password for user dennisit.
New password: 
Retype new password: 
passwd: all authentication tokens updated successfully.
[root@elonsu cloud]# chown dennisit:dennisit elastic -R
[root@elonsu cloud]# su dennisit
[dennisit@elonsu cloud]$ cd elastic
[dennisit@elonsu elastic]$ bin/elasticsearch &
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发布系统在技术团队中有着重要作用, 承担我们每天的服务部署工作, 企业发布系统根据企业技术能力来决定, 小公司不像那些公司一样,有充足的人力去开发一套自己的发布系统. 所以尽可能的去寻找一些适合企业应用的部署系统, 以提高人力成本.

这里推荐两款开源的发布系统:

jekins可能大家都很熟悉,也有好多文章, walle是国人写的一个轻量的发布系统, 只所以推荐它 是因为相对其它开源的发布系统来说, 其UI界面至少看着比较舒服, 基本功能也都有. 支持国产开源.

Walle安装部署

Walle是基于PHP写的, 所以安装前需要安装PHP环境.

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索引信息

查看索引信息

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[root@localhost elasticsearch-6.0.0 ]$ curl -XGET "http://127.0.0.1:9200/db_test?pretty=true"
{
  "db_test" : {
    "aliases" : { },
    "mappings" : {
      "tb_opus" : {
        "properties" : {
          "aliasName" : {
            "type" : "text",
            "fields" : {
              "origin" : {
                "type" : "keyword"
              },
              "pinyin" : {
                "type" : "text",
                "term_vector" : "with_positions_offsets",
                "analyzer" : "ik_pinyin_analyzer"
              },
              "suggest" : {
                "type" : "completion",
                "analyzer" : "ik_max_word",
                "preserve_separators" : true,
                "preserve_position_increments" : true,
                "max_input_length" : 50
              }
            },
            "analyzer" : "ik_max_word"
          },
          "appId" : {
            "type" : "long"
          },
          "author" : {
            "type" : "text",
            "fields" : {
              "origin" : {
                "type" : "keyword"
              },
              "pinyin" : {
                "type" : "text",
                "term_vector" : "with_positions_offsets",
                "analyzer" : "ik_pinyin_analyzer"
              },
              "suggest" : {
                "type" : "completion",
                "analyzer" : "ik_max_word",
                "preserve_separators" : true,
                "preserve_position_increments" : true,
                "max_input_length" : 50
              }
            },
            "analyzer" : "ik_smart"
          },
          "createTime" : {
            "type" : "date"
          },
          "enabled" : {
            "type" : "integer"
          },
          "favoriteTotal" : {
            "type" : "long"
          },
          "fingerprint" : {
            "type" : "keyword"
          },
          "id" : {
            "type" : "long"
          },
          "images" : {
            "type" : "keyword"
          },
          "introduce" : {
            "type" : "text",
            "fields" : {
              "pinyin" : {
                "type" : "text",
                "boost" : 10.0,
                "term_vector" : "with_positions_offsets",
                "analyzer" : "ik_pinyin_analyzer"
              }
            },
            "analyzer" : "ik_smart"
          },
          "issueTime" : {
            "type" : "long"
          },
          "opusName" : {
            "type" : "text",
            "fields" : {
              "origin" : {
                "type" : "keyword"
              },
              "pinyin" : {
                "type" : "text",
                "term_vector" : "with_positions_offsets",
                "analyzer" : "ik_pinyin_analyzer"
              },
              "suggest" : {
                "type" : "completion",
                "analyzer" : "ik_max_word",
                "preserve_separators" : true,
                "preserve_position_increments" : true,
                "max_input_length" : 50
              }
            },
            "analyzer" : "ik_max_word"
          },
          "score" : {
            "type" : "double"
          },
          "sort" : {
            "type" : "long"
          },
          "tags" : {
            "type" : "text",
            "fields" : {
              "origin" : {
                "type" : "keyword"
              },
              "pinyin" : {
                "type" : "text",
                "term_vector" : "with_positions_offsets",
                "analyzer" : "ik_pinyin_analyzer"
              },
              "suggest" : {
                "type" : "completion",
                "analyzer" : "ik_max_word",
                "preserve_separators" : true,
                "preserve_position_increments" : true,
                "max_input_length" : 50
              }
            },
            "analyzer" : "ik_max_word"
          },
          "type" : {
            "type" : "integer"
          },
          "updateTime" : {
            "type" : "date"
          },
          "userId" : {
            "type" : "long"
          },
          "uuid" : {
            "type" : "keyword"
          },
          "viewTotal" : {
            "type" : "long"
          }
        }
      }
    },
    "settings" : {
      "index" : {
        "number_of_shards" : "1",
        "provided_name" : "db_test",
        "creation_date" : "1514353694378",
        "analysis" : {
          "filter" : {
            "mix_pinyin" : {
              "lowercase" : "true",
              "padding_char" : " ",
              "first_letter" : "prefix",
              "keep_original" : "true",
              "remove_duplicated_term" : "true",
              "type" : "pinyin",
              "keep_full_pinyin" : "true"
            }
          },
          "analyzer" : {
            "ik_pinyin_analyzer" : {
              "filter" : [
                "mix_pinyin",
                "word_delimiter"
              ],
              "type" : "custom",
              "tokenizer" : "ik_max_word"
            },
            "default" : {
              "tokenizer" : "ik_max_word"
            }
          }
        },
        "number_of_replicas" : "1",
        "uuid" : "seg7yr55R121l8tRW3r7uA",
        "version" : {
          "created" : "6000099"
        }
      }
    }
  }
}
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索引信息

查看索引信息

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[root@localhost elasticsearch-6.0.0 ]$ curl -XGET "http://127.0.0.1:9200/db_test?pretty=true"
{
  "db_test" : {
    "aliases" : { },
    "mappings" : {
      "tb_opus" : {
        "properties" : {
          "aliasName" : {
            "type" : "text",
            "fields" : {
              "origin" : {
                "type" : "keyword"
              },
              "pinyin" : {
                "type" : "text",
                "term_vector" : "with_positions_offsets",
                "analyzer" : "ik_pinyin_analyzer"
              },
              "suggest" : {
                "type" : "completion",
                "analyzer" : "ik_max_word",
                "preserve_separators" : true,
                "preserve_position_increments" : true,
                "max_input_length" : 50
              }
            },
            "analyzer" : "ik_max_word"
          },
          "appId" : {
            "type" : "long"
          },
          "author" : {
            "type" : "text",
            "fields" : {
              "origin" : {
                "type" : "keyword"
              },
              "pinyin" : {
                "type" : "text",
                "term_vector" : "with_positions_offsets",
                "analyzer" : "ik_pinyin_analyzer"
              },
              "suggest" : {
                "type" : "completion",
                "analyzer" : "ik_max_word",
                "preserve_separators" : true,
                "preserve_position_increments" : true,
                "max_input_length" : 50
              }
            },
            "analyzer" : "ik_smart"
          },
          "createTime" : {
            "type" : "date"
          },
          "enabled" : {
            "type" : "integer"
          },
          "favoriteTotal" : {
            "type" : "long"
          },
          "fingerprint" : {
            "type" : "keyword"
          },
          "id" : {
            "type" : "long"
          },
          "images" : {
            "type" : "keyword"
          },
          "introduce" : {
            "type" : "text",
            "fields" : {
              "pinyin" : {
                "type" : "text",
                "boost" : 10.0,
                "term_vector" : "with_positions_offsets",
                "analyzer" : "ik_pinyin_analyzer"
              }
            },
            "analyzer" : "ik_smart"
          },
          "issueTime" : {
            "type" : "long"
          },
          "opusName" : {
            "type" : "text",
            "fields" : {
              "origin" : {
                "type" : "keyword"
              },
              "pinyin" : {
                "type" : "text",
                "term_vector" : "with_positions_offsets",
                "analyzer" : "ik_pinyin_analyzer"
              },
              "suggest" : {
                "type" : "completion",
                "analyzer" : "ik_max_word",
                "preserve_separators" : true,
                "preserve_position_increments" : true,
                "max_input_length" : 50
              }
            },
            "analyzer" : "ik_max_word"
          },
          "score" : {
            "type" : "double"
          },
          "sort" : {
            "type" : "long"
          },
          "tags" : {
            "type" : "text",
            "fields" : {
              "origin" : {
                "type" : "keyword"
              },
              "pinyin" : {
                "type" : "text",
                "term_vector" : "with_positions_offsets",
                "analyzer" : "ik_pinyin_analyzer"
              },
              "suggest" : {
                "type" : "completion",
                "analyzer" : "ik_max_word",
                "preserve_separators" : true,
                "preserve_position_increments" : true,
                "max_input_length" : 50
              }
            },
            "analyzer" : "ik_max_word"
          },
          "type" : {
            "type" : "integer"
          },
          "updateTime" : {
            "type" : "date"
          },
          "userId" : {
            "type" : "long"
          },
          "uuid" : {
            "type" : "keyword"
          },
          "viewTotal" : {
            "type" : "long"
          }
        }
      }
    },
    "settings" : {
      "index" : {
        "number_of_shards" : "1",
        "provided_name" : "db_test",
        "creation_date" : "1514353694378",
        "analysis" : {
          "filter" : {
            "mix_pinyin" : {
              "lowercase" : "true",
              "padding_char" : " ",
              "first_letter" : "prefix",
              "keep_original" : "true",
              "remove_duplicated_term" : "true",
              "type" : "pinyin",
              "keep_full_pinyin" : "true"
            }
          },
          "analyzer" : {
            "ik_pinyin_analyzer" : {
              "filter" : [
                "mix_pinyin",
                "word_delimiter"
              ],
              "type" : "custom",
              "tokenizer" : "ik_max_word"
            },
            "default" : {
              "tokenizer" : "ik_max_word"
            }
          }
        },
        "number_of_replicas" : "1",
        "uuid" : "seg7yr55R121l8tRW3r7uA",
        "version" : {
          "created" : "6000099"
        }
      }
    }
  }
}
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SpringBoot配置默认情况下是明文显示，安全性就比较低一些。jasypt该插件可以对配置文件进行加密, 提高配置的安全性

插件引入

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<dependency>
    <groupId>com.github.ulisesbocchio</groupId>
    <artifactId>jasypt-spring-boot-starter</artifactId>
    <version>2.1.0</version>
</dependency>

组件说明

使用组件原生API进行加解密，说明: 每次编码生成的编码结果串都会不一样, 均可以逆向解析.

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使用JavaMail发送邮件在阿里云服务器邮件发送失败

问题发现

问题产生: SpringBoot使用JavaMail发送邮件，本地测试是可以通过的，但项目部署到阿里云服务器后就不行了

问题原因: 阿里云处于安全考虑，TCP25端口出方向默认被封禁.

问题解决

对于阿里云线上服务器, 需要将邮箱的配置改为ssl加密465端口发送. application.properties配置文件中增加下面配置

旧版配置

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spring.mail.host=smtp.qq.com
spring.mail.port=25
spring.mail.username=邮箱账号
spring.mail.password=邮箱密码
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