- html - 出于某种原因,IE8 对我的 Sass 文件中继承的 html5 CSS 不友好?
- JMeter 在响应断言中使用 span 标签的问题
- html - 在 :hover and :active? 上具有不同效果的 CSS 动画
- html - 相对于居中的 html 内容固定的 CSS 重复背景?
我是java新手。我java一个像这样的字符串。
String result = "'" + city + "'" + "," + "'" + locality + "'" + "," + "'" + Name_of_Person + "'" + "," + "'"
+ User_email_address + "'" + "," + "'" + user_phone_number + "'" + "," + "'" + sub_locality + "'"
+ "," + "'" + street_name + "'" + "," + "'" + home_plot_no + "'" + "," + "'" + pin_code + "'" + ","
+ "'" + project_society_build_name + "'" + "," + "'" + landmark_reference_1 + "'" + "," + "'"
+ landmark_reference_2 + "'" + "," + "'" + No_of_Schools + "'" + "," + "'" + No_of_Hospitals + "'"
+ "," + "'" + No_of_Metro + "'" + "," + "'" + No_of_Mall + "'" + "," + "'" + No_of_Park + "'" + ","
+ "'" + Distance_of_schools + "'" + "," + "'" + Distance_of_Hospitals + "'" + "," + "'"
+ Distance_of_Metro + "'" + "," + "'" + Distance_of_Mall + "'" + "," + "'" + Distance_of_Park + "'"
+ "," + "'" + lat + "'" + "," + "'" + lng + "'" + "," + "'" + ip + "'" + "," + "'" + hostname + "'"
+ "," + "'" + ip_city + "'" + "," + "'" + ip_region + "'" + "," + "'" + ip_country + "'" + "," + "'"
+ ip_loc + "'" + "," + "'" + ip_org + "'" + "," + "'" + ip_postal + "'" + "," + "'" + home_type
+ "'" + "," + "'" + area + "'" + "," + "'" + beds + "'" + "," + "'" + bath_rooms + "'" + "," + "'"
+ building_age + "'" + "," + "'" + floors + "'" + "," + "'" + balcony + "'" + "," + "'" + amenities
+ "'" + "," + "'" + gated_security + "'" + "," + "'" + physical_security + "'" + "," + "'"
+ cctv_camera + "'" + "," + "'" + controll_access + "'" + "," + "'" + elevator + "'" + "," + "'"
+ power_back_up + "'" + "," + "'" + parking + "'" + "," + "'" + partial_parking + "'" + "," + "'"
+ onsite_maintenance_store + "'" + "," + "'" + open_garden + "'" + "," + "'" + party_lawn + "'"
+ "," + "'" + amenities_balcony + "'" + "," + "'" + club_house + "'" + "," + "'" + fitness_center
+ "'" + "," + "'" + swimming_pool + "'" + "," + "'" + party_hall + "'" + "," + "'" + tennis_court
+ "'" + "," + "'" + basket_ball_court + "'" + "," + "'" + squash_coutry + "'" + "," + "'"
+ amphi_theatre + "'" + "," + "'" + business_center + "'" + "," + "'" + jogging_track + "'" + ","
+ "'" + convinience_store + "'" + "," + "'" + guest_rooms + "'" + "," + "'" + interior + "'" + ","
+ "'" + tiles + "'" + "," + "'" + marble + "'" + "," + "'" + wooden + "'" + "," + "'"
+ modular_kitchen + "'" + "," + "'" + partial_modular_kitchen + "'" + "," + "'" + gas_pipe + "'"
+ "," + "'" + intercom_system + "'" + "," + "'" + air_conditioning + "'" + "," + "'"
+ partial_air_conditioning + "'" + "," + "'" + wardrobe + "'" + "," + "'" + sanitation_fixtures
+ "'" + "," + "'" + false_ceiling + "'" + "," + "'" + partial_false_ceiling + "'" + "," + "'"
+ recessed_lighting + "'" + "," + "'" + location + "'" + "," + "'" + good_view + "'" + "," + "'"
+ transporation_hub + "'" + "," + "'" + shopping_center + "'" + "," + "'" + hospital + "'" + ","
+ "'" + school + "'" + "," + "'" + ample_parking + "'" + "," + "'" + park + "'" + "," + "'" + temple
+ "'" + "," + "'" + bank + "'" + "," + "'" + less_congestion + "'" + "," + "'" + less_pollution
+ "'" + "," + "'" + maintenance + "'" + "," + "'" + maintenance_value + "'" + "," + "'"
+ Near_by_school + "'" + "," + "'" + Near_by_hospital + "'" + "," + "'" + Near_by_mall + "'" + ","
+ "'" + Near_by_park + "'" + "," + "'" + Near_by_metro + "'" + "," + "'" + city + "'" + "," + "'"
+ locality + "'" + "," + "'" + token + "'";
我将许多字符串连接到一个结果字符串变量。我需要为此串联操作编写函数以优化代码。任何帮助将不胜感激。
最佳答案
一种简单的方法是使用 StringJoiner
//Setup the joiner for between items
StringJoiner sj = new StringJoiner("','");
sj.add(city);
sj.add(locality);
//[...]
//One last wrap to add initial and trailing '
String result = new StringBuilder("'").append(sj.toString()).append("'").toString();
但是,您需要注意您添加的字符串是否已正确转义(字符串中的 ' 可能会破坏您的代码)
如果您仍然运行 Java 7,您将被迫单独使用 StringBuilder:
public String join(String... s) {
StringBuilder sb = new StringBuilder("'");
for(String token : s) {
sb.append(token).append("','");
}
sb.append("'");
return sb.toString();
}
并称其为
String result = join(city, locality, Name_of_Person); //Need to add more...
关于java - 如何在 Java 中编写串联函数,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/35408194/
我只想从客户端向服务器发送数组 adc_array=[w, x, y, z]。下面是客户端代码,而我的服务器是在只接受 json 的 python 中。编译代码时我没有收到任何错误,但收到 2 条警告
我是 lua 和 Node js 的新手,我正在尝试将我正在开发的移动应用程序连接到服务器。问题是它连接到服务器,但我尝试传递的数据丢失或无法到达服务器。对我正在做的事情有什么问题有什么想法吗? th
我在这个页面上工作 http://www.haskell.org/haskellwiki/99_questions/Solutions/4 我理解每个函数的含义,看到一个函数可以像这样以多种方式定义,
我目前正在尝试将数据写入 excel 以生成报告。我可以将数据写入 csv 文件,但它不会按照我想要的顺序出现在 excel 中。我需要数据在每列的最佳和最差适应性下打印,而不是全部打印在平均值下。这
所以,我正在做一个项目,现在我有一个问题,所以我想得到你的帮助:) 首先,我已经知道如何编写和读取 .txt 文件,但我想要的不仅仅是 x.hasNext()。 我想知道如何像 .ini 那样编写、读
我正在尝试编写一个函数,该函数将返回作为输入给出的任何数字的阶乘。现在,我的代码绝对是一团糟。请帮忙。 function factorialize(num) { for (var i=num, i
这个问题已经有答案了: Check variable equality against a list of values (16 个回答) 已关闭 4 年前。 有没有一种简洁或更好的方法来编写这个条件
我对 VR 完全陌生,正在 AFrame 中为一个类(class)项目开发 VR 太空射击游戏,并且想知道 AFrame 中是否有 TDD 的任何文档/标准。有人能指出我正确的方向吗? 最佳答案 几乎
我正在尝试创建一个 for 循环,它将重现以下功能代码块,但以一种更具吸引力的方式。这是与 Soundcould 小部件 API 实现一起使用的 here on stackoverflow $(doc
我有一个非常令人困惑的问题。我正在尝试更改属性文件中的属性,但它只是没有更改... 这是代码: package config; import java.io.FileNotFoundException
我对 VR 完全陌生,正在 AFrame 中为一个类(class)项目开发 VR 太空射击游戏,并且想知道 AFrame 中是否有 TDD 的任何文档/标准。有人能指出我正确的方向吗? 最佳答案 几乎
我正在开发一个用户模式(Ring3)代码级调试器。它还应支持.NET可执行文件的本机(x86)调试。基本上,我需要执行以下操作: 1).NET在隐身模式下加载某些模块,而没有LOAD_DLL_DEBU
我有一个列表,我知道有些项目是不必要打印的,我正在尝试通过 if 语句来做到这一点...但是它变得非常复杂,所以有没有什么方法可以在 if 语句中包含多个索引而无需打印重写整个声明。 看起来像这样的东
我很好奇以不同方式编写 if 语句是否会影响程序的速度和效率。所以,例如写一个这样的: bool isActive = true; bool isResponding = false; if (isA
我在搜索网站的源代码时找到了一种以另一种方式(我认为)编写 if 语句的方法。 代替: if(a)b; 或: a?b:''; 我读了: !a||b; 第三种方式和前两种方式一样吗?如果是,为什么我们要
我的数据采用以下格式(HashMap的列表) {TeamName=India, Name=Sachin, Score=170} {TeamName=India, Name=Sehwag, Score=
我目前正在完成 More JOIN operations sqlzoo 的教程,遇到了下面的代码作为#12 的答案: SELECT yr,COUNT(title) FROM movie JOIN ca
我正试图找到一种更好的方法来编写这段代码: def down_up(array, player) 7.downto(3).each do |row| 8.times do |col
出于某种原因,我的缓冲区中充满了乱码,我不确定为什么。我什至用十六进制编辑器检查了我的文件,以验证我的字符是否以 2 字节的 unicode 格式保存。我不确定出了什么问题。 [打开文件] fseek
阅读编码恐怖片时,我刚刚又遇到了 FizzBuzz。 原帖在这里:Coding Horror: Why Can't Programmers.. Program? 对于那些不知道的人:FizzBu
我是一名优秀的程序员,十分优秀!