英文:

space bar lag in Nvim & Jdtls

问题

以下是代码的翻译部分：

我一直在开发一个Spring Boot项目，想要使用jdtls，但每当我按下空格键时，会出现延迟，这让我很烦恼。我尝试减少插件的数量，只保留了LSP，但仍然没有解决问题。

问题只出现在空格键上，其他操作似乎都很快。

我的LSP配置：

local lsp = require('lsp-zero')

lsp.preset('recommended')

lsp.ensure_installed({
	'tsserver',
	'eslint',
    'jdtls',
})

local cmp = require('cmp')
local cmp_select = {behavior = cmp.SelectBehavior.Select}
local cmp_mappings = lsp.defaults.cmp_mappings({
	['<C-p>'] = cmp.mapping.select_prev_item(cmp_select),
	['<C-n>'] = cmp.mapping.select_next_item(cmp_select),
	['<C-y>'] = cmp.mapping.confirm({ select = true }),
	['<C-Space>'] = cmp.mapping.complete(),
})

lsp.set_preferences({
	sign_icons = { }
})

lsp.on_attach(function(client, bufnr)
	local opts = {buffer = bufnr, remap = false}

	vim.keymap.set('n', 'gd', function() vim.lsp.buf.definition() end, opts)
    vim.keymap.set('n', '<leader>vf', function () vim.lsp.buf.implementation() end, opts)
	vim.keymap.set('n', 'K', function() vim.lsp.buf.hover() end, opts)
	vim.keymap.set('n', '<leader>vws', function() vim.lsp.buf.workspace_symbol() end, opts)
	vim.keymap.set('n', 'gz', function() vim.diagnostic.open_float() end, opts)
	vim.keymap.set('n', '<d', function() vim.diagnostic.goto_next() end, opts)
	vim.keymap.set('n', '>d', function() vim.diagnostic.goto_prev() end, opts)
	vim.keymap.set('n', '<leader>vca', function() vim.lsp.buf.code_action() end, opts)
	vim.keymap.set('n', '<leader>vrr', function() vim.lsp.buf.references() end, opts)
	vim.keymap.set('n', '<leader>vrn', function() vim.lsp.buf.rename() end, opts)
	vim.keymap.set('i', '<leader>h', function() vim.lsp.buf.signature_help() end, opts)
end)

lsp.setup()

我的Java设置：

local config = {
cmd = {
"java", -- 或绝对路径'/path/to/java11_or_newer/bin/java'
"-Declipse.application=org.eclipse.jdt.ls.core.id1",
"-Dosgi.bundles.defaultStartLevel=4",
"-Declipse.product=org.eclipse.jdt.ls.core.product",
"-Dlog.protocol=true",
"-Dlog.level=ALL",
"-Xms1g",
"--add-modules=ALL-SYSTEM",
"--add-opens",
"java.base/java.util=ALL-UNNAMED",
"--add-opens",
"java.base/java.lang=ALL-UNNAMED",
"-jar",
"/path/to/jdtls_install_location/plugins/org.eclipse.equinox.launcher_VERSION_NUMBER.jar",
"-configuration", "/path/to/jdtls_install_location/config_SYSTEM",
"-data", "/Users/YOUR_MACHINE_NAME/local/share/nvim/java"
},
settings = {
java = {
signatureHelp = {enabled = true},
import = {enabled = true},
rename = {enabled = true}
}
},
init_options = {
bundles = {}
}
}

<details>
<summary>英文:</summary>

I&#39;ve been working on a springboot project and wanted to use jdtls but I had lag whenever I hit the space bar it became annoying I tried reducing my plugins to the point where I only have my lsp installed but it didn&#39;t work.

the problem only applies to the space bar everything else seems snappy

my lsp config

local lsp = require('lsp-zero')

lsp.preset('recommended')

lsp.ensure_installed({
'tsserver',
'eslint',
'jdtls',
})

local cmp = require('cmp')
local cmp_select = {behavior = cmp.SelectBehavior.Select}
local cmp_mappings = lsp.defaults.cmp_mappings({
['<C-p>'] = cmp.mapping.select_prev_item(cmp_select),
['<C-n>'] = cmp.mapping.select_next_item(cmp_select),
['<C-y>'] = cmp.mapping.confirm({ select = true }),
['<C-Space>'] = cmp.mapping.complete(),
})

lsp.set_preferences({
sign_icons = { }
})

lsp.on_attach(function(client, bufnr)
local opts = {buffer = bufnr, remap = false}

vim.keymap.set('n', 'gd', function() vim.lsp.buf.definition() end, opts)
vim.keymap.set('n', '<leader>vf', function () vim.lsp.buf.implementation() end, opts)
vim.keymap.set('n', 'K', function() vim.lsp.buf.hover() end, opts)
vim.keymap.set('n', '<leader>vws', function() vim.lsp.buf.workspace_symbol() end, opts)
vim.keymap.set('n', 'gz', function() vim.diagnostic.open_float() end, opts)
vim.keymap.set('n', '<d', function() vim.diagnostic.goto_next() end, opts)
vim.keymap.set('n', '>d', function() vim.diagnostic.goto_prev() end, opts)
vim.keymap.set('n', '<leader>vca', function() vim.lsp.buf.code_action() end, opts)
vim.keymap.set('n', '<leader>vrr', function() vim.lsp.buf.references() end, opts)
vim.keymap.set('n', '<leader>vrn', function() vim.lsp.buf.rename() end, opts)
vim.keymap.set('i', '<leader>h', function() vim.lsp.buf.signature_help() end, opts)

end)

lsp.setup()

my java settings

local config = {
cmd = {
--
"java", -- Or the absolute path '/path/to/java11_or_newer/bin/java'
"-Declipse.application=org.eclipse.jdt.ls.core.id1",
"-Dosgi.bundles.defaultStartLevel=4",
"-Declipse.product=org.eclipse.jdt.ls.core.product",
"-Dlog.protocol=true",
"-Dlog.level=ALL",
"-Xms1g",
"--add-modules=ALL-SYSTEM",
"--add-opens",
"java.base/java.util=ALL-UNNAMED",
"--add-opens",
"java.base/java.lang=ALL-UNNAMED",
--
"-jar",
"/path/to/jdtls_install_location/plugins/org.eclipse.equinox.launcher_VERSION_NUMBER.jar",
"-configuration", "/path/to/jdtls_install_location/config_SYSTEM",
"-data", "/Users/YOUR_MACHINE_NAME/local/share/nvim/java"
},
settings = {
java = {
signatureHelp = {enabled = true},
import = {enabled = true},
rename = {enabled = true}
}
},
init_options = {
bundles = {}
}
}

</details>


# 答案1
**得分**: 0

终于找到了解决问题的方法。

问题的罪魁祸首是我LSP配置中插入模式的键位映射。

我使用以下命令找到了它：

verbose imap<space>

移除了这个键绑定之后，问题似乎解决了。

<details>
<summary>英文:</summary>

finally found a fix to the issue

the culprit was a keymap in insert mode in my lsp config.

I found it using the command

verbose imap<space>

after removing the keybind the problem seems to go away

</details>